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Quantum Sensing & Metrology: Atomic Clocks & Quantum Sensors

Quantum sensing news: quantum metrology, atomic clocks, quantum gravimetry, magnetometers. Quantum imaging & positioning applications.

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Quantum sensing exploits quantum superposition and entanglement to achieve measurement precision beyond classical limits, offering orders-of-magnitude improvements in timing, navigation, magnetic field detection, and gravitational sensing.

Core technologies include atomic clocks achieving precision of 10^-18 (losing 1 second over 30 billion years); quantum magnetometers detecting femtotesla magnetic fields; and quantum gravimeters measuring gravitational acceleration for underground infrastructure mapping.

India's Quantum Sensing and Metrology Initiatives

India's National Quantum Mission includes quantum sensing and metrology as one of four verticals with dedicated funding. The Qmet Tech Foundation at IIT Bombay serves as the Thematic Hub on Quantum Sensing, Imaging, and Metrology under NQM. Established as a Section-8 not-for-profit company, Qmet brings together 16 premier institutions and 40+ researchers across India.

Key Qmet technologies include the portable magnetometer and quantum diamond microscope developed at IIT Bombay's Photonics and Quantum Sensing Technology Lab (P-Quest Lab). The quantum diamond microscope uses nitrogen-vacancy (NV) centers in diamond as ultra-sensitive magnetic field sensors for applications including non-destructive testing of semiconductor chips and biological sensing of neuronal cultures.

The Physical Research Laboratory (PRL) in Ahmedabad develops atomic clocks for ISRO's navigation satellites (NavIC). The Defence Research and Development Organisation (DRDO) develops quantum sensors for defense applications including submarine detection and navigation in GPS-denied environments.

The NQM targets developing magnetometers with high sensitivity in atomic systems and atomic clocks for precision timing, communications, and navigation. The ₹720 crore quantum fabrication facility investment includes quantum sensing infrastructure at IIT Bombay and IIT Kanpur.

Monash University Derives Exact Formulae for NV Centre Spin Statesquantum-computing

Monash University Derives Exact Formulae for NV Centre Spin States

Exact analytical formulas calculate the energy levels and properties of nitrogen-vacancy (NV) centres in diamond subjected to magnetic fields. This allows precise computation of hyperfine structure, the interaction between an electron’s spin and its host nucleus, for both common isotopes of nitrogen, namely nitrogen-14 and -15. Previously, determining these values relied on complex numerical calculations or approximations; a complete analytic solution is now available. The new formulas simplify calculations used in developing technologies reliant on defects within diamonds, as these imperfections are key to quantum sensors and computers. Previously, determining energy levels required either complex computer simulations or estimations that lacked precision; this delivers an exact mathematical solution instead. This analytical approach enables accurate prediction of how magnetic fields influence the spin properties of nitrogen-vacancy centres, atomic flaws where a nitrogen atom replaces carbon in the diamond structure, without intensive computation. Researchers at Monash University have devised precise mathematical formulas to calculate energy levels within nitrogen-vacancy (NV) centres in diamond when exposed to magnetic fields; previously these calculations relied on approximations or computationally intensive methods. This analytical solution determines hyperfine structure, the subtle energy level shifts created by interactions between an electron’s spin and its host nucleus, similar to how different musical notes are produced from vibrations at slightly differing frequencies, for both common forms of nitrogen found in diamonds. The new closed-form expression provides a direct answer with defined steps, simplifying development of quantum technologies dependent on imperfections within diamonds. These defects are vital components in emerging devices such as advanced sensors and computers; however, accurately predicting their behaviour under varying conditions has bee

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Researchers at Nanoarchitectonics Center Guide Quantum Vortices with Atomic Railsquantum-computing

Researchers at Nanoarchitectonics Center Guide Quantum Vortices with Atomic Rails

Image: MANA,NIMS and Art Action Inc · nims.go.jp Researchers at the Research Center for Materials Nanoarchitectonics (MANA), under the National Institute for Materials Science in Japan, have directly visualized how atomic steps on an ultrathin superconductor can guide quantum vortices, effectively creating nanoscale “rails” for their movement. The team reports vortices moved more than 1,000 times more easily along these atomic steps compared to across them at intermediate magnetic fields, a dramatic difference in mobility. Takashi Uchihashi explained, “Our study shows that atomic-scale steps can act as effective rails that guide superconducting vortices, and that this guiding effect can be tuned simply by changing the temperature or magnetic field.” Published July 30, 2026, in Physical Review B, these findings demonstrate a new method for controlling vortex motion and heat flow in future superconducting technologies. Atomic Steps Enable Tunable Superconducting Vortex Flow Atomic steps function as directional guides for quantum vortices within ultrathin superconductors, a phenomenon revealed through scanning tunneling microscopy. The imaging directly showed vortices aligning with these steps, demonstrating a physical mechanism for controlling their movement and confirming the steps act as nanoscale “rails” for these quantum objects. This significant difference in mobility suggests a pathway toward more efficient superconducting devices, and the ability to tune vortex flow with external conditions further enhances the potential of this discovery. Between approximately 0.10 and 0.20 Tesla, vortices exhibited unimpeded flow along the steps, a state the researchers describe as one-dimensional pinning-free vortex flow. At lower temperatures, however, quantum tunneling governed vortex motion, demonstrating a shift in the dominant mechanism.

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Quantum Computing Stocks To Watch Today - September 26th - MarketBeatquantum-computing

Quantum Computing Stocks To Watch Today - September 26th - MarketBeat

Quantum Computing Stocks To Watch Today - September 26th Written by MarketBeatSeptember 26, 2026Add As Preferred SourceShareShareShare This ArticleLink copied to clipboard.Close Image from MarketBeat Media, LLC. Key Points Five quantum-computing stocks to watch are IonQ (IONQ), D-Wave Quantum (QBTS), Quantinuum (QNT), Quantum Computing (QUBT), and Horizon Quantum Computing (HQ), selected for their recent trading volume. IonQ and D-Wave provide cloud-based access to quantum systems, while Quantum Computing focuses on photonics-based machines, quantum sensing, random-number generation, and cybersecurity applications. The sector is moving toward early commercial adoption, driven partly by rising AI-related computing demand, but remains high-growth and highly speculative due to technological, financial, and regulatory uncertainties. MarketBeat previews top five stocks to own in October. MarketBeat Week in Review – 09/21 - 09/25IonQ, D-Wave Quantum, Quantinuum, Quantum Computing, and Horizon Quantum Computing Pte. are the five Quantum Computing stocks to watch today, according to MarketBeat's stock screener tool. Quantum computing stocks are shares of publicly traded companies involved in developing quantum-computing hardware, software, components, or related services. For investors, the term generally refers to a high-growth, highly speculative sector whose companies may face significant technological, financial, and regulatory uncertainties. These companies had the highest dollar trading volume of any Quantum Computing stocks within the last several days. Get IonQ alerts:Sign UpIonQ (IONQ)IonQ, Inc. engages in the development of general-purpose quantum computing systems in the United States. It sells access to quantum computers of various qubit capacities. The company makes access to its quantum computers through cloud platforms, such as Amazon Web Services (AWS) Amazon Braket, Microsoft's Azure Quantum, and Google's Cloud Marketplace, as well as through its cloud serv

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Germany invests in better quantum sensors and communicationquantum-computing

Germany invests in better quantum sensors and communication

The University of Paderborn is coordinating a new collaborative project, “Detector Engineering to Enable Quantum Technology” (DETEQT), which will receive approximately six million Euro in funding from the Bundesministerium für Forschung, Technologie und Raumfahrt (BMFTR) over three years. The project focuses on advancing single-photon detectors based on nanowires, known as Nanodraht-Einzelphotonendetektoren (SNSPDs), to overcome hurdles in scalability and performance for photonic Quantum Processor Units (QPUs). This work aims to improve the practicality of systems intended for use in quantum computers, communication, and sensing, and is part of a larger effort with seven other funded projects led by Prof. Tim Bartley to strengthen collaboration across Germany’s quantum technology sector. Paderborn University Coordinates “DETEQT” for Quantum Technology Advancement Nanodraht-Einzelphotonendetektoren, or SNSPDs, are undergoing focused development within the DETEQT project to address limitations in scalability, integration, and performance of photonic Quantum Processor Units. These single-photon detectors aim to overcome technical hurdles preventing wider application in quantum computing, communication, and sensing technologies. Multiple partners from both academia and industry, including the Technische Universität München and the Physikalisch-Technische Bundesanstalt, contribute to this effort. The newly launched cluster led by Prof. Tim Bartley unifies seven funded collaborative projects to bolster cooperation across Germany’s quantum technology sector; this coordinated approach extends beyond individual initiatives, signaling a national strategy to advance photonic quantum technologies. According to the Universität Paderborn, the project’s goal is to significantly improve the practicality of these systems for real-world deployment. Source: https://ein-quantum.nrw/neues-verbundprojekt-fuer-photonische-quantentechnologien-gestartet More like thisQuantum TechnologyPhoto

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DRDO Signs First High-Value TDF Pact with Startup Zero mK India for 20 mK Dilution Refrigeratorquantum-computing

DRDO Signs First High-Value TDF Pact with Startup Zero mK India for 20 mK Dilution Refrigerator

DRDO Signs First High-Value TDF Pact with Startup Zero mK India for 20 mK Dilution Refrigerator India’s Defence Research and Development Organisation (DRDO) has executed its first high-value deep-tech project agreement under the Technology Development Fund (TDF) scheme with domestic startup Zero mK India. The collaborative contract targets the indigenous engineering and fabrication of a 20 millikelvin (20 mK) dilution refrigerator, establishing a secure domestic supply chain for sub-kelvin cryogenic hardware essential for quantum computing and defense applications. The agreement represents the first high-value project sanctioned under the expanded ₹500-crore (~$52.2 million USD) TDF corpus approved by Defence Minister Rajnath Singh. Dilution refrigerators provide the ultra-low temperature, sub-absolute-zero environment (spanning down to 20 mK) required to preserve phase coherence in solid-state quantum processing units, including superconducting circuits, silicon spin qubits, and quantum sensing arrays. The project is monitored, mentored, and technically evaluated by the director and scientific team at DRDO’s Solid State Physics Laboratory (SSPL) in Delhi. [ DRDO TDF Deep-Tech Cryogenic Project Overview ]Entity / ProgramTechnical & Cryogenic TargetsStrategic & Policy Context• DRDO & Zero mK India• TDF Scheme Grant• Mentorship: SSPL Delhi• Operating Temp: 20 mK (0.02 K)• Sub-kelvin 3He/4He dilution circulation• Scalable QPU testing & packaging stage• National Alignment: National Quantum Mission• Fund: ₹500-Crore TDF Deep-Tech Corpus• Reduces import dependency on Western cryo vendor systems Aligning with India’s National Quantum Mission (NQM), the project mitigates sovereign import vulnerabilities for specialized cryogenic equipment. By developing indigenous sub-kelvin refrigeration capabilities, the initiative supports domestic research laboratories, defense communication programs, and commercial quantum hardware developers building sovereign quantum

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Mesa Quantum Raises $11.8M to Scale Chip-Scale Quantum Sensors and Alternative PNT Infrastructurequantum-computing

Mesa Quantum Raises $11.8M to Scale Chip-Scale Quantum Sensors and Alternative PNT Infrastructure

Mesa Quantum Raises $11.8M to Scale Chip-Scale Quantum Sensors and Alternative PNT Infrastructure Quantum sensing developer Mesa Quantum has secured an oversubscribed $11.8 million funding round led by deep-tech venture capital firm Playground Global via its $50 million Playground Genesis Fund. Joined by DCVC, J2 Ventures, and additional institutional backers, the round brings Mesa Quantum’s total venture funding to nearly $16 million alongside $5 million in non-dilutive awards from U.S. government defense agencies such as SpaceWERX. The capital will accelerate Mesa Quantum’s transition from component-level R&D to system integration and volume manufacturing of ruggedized, chip-scale quantum timing and navigation units. Mesa Quantum’s core platform centers on chip-scale atomic clocks (CSACs) and quantum inertial sensors built on miniaturized atomic vapor cell technology. By measuring laser absorption through microscopic vapor chambers, these sensors deliver picosecond-level time synchronization and precision positioning that operate independently of global positioning systems (GPS). The technology addresses growing vulnerabilities in satellite-based Alternative Position, Navigation, and Timing (ALT-PNT), protecting defense and commercial systems against signal jamming, spoofing, and electronic warfare in contested environments. [ Mesa Quantum Funding & Operational Integration Scope ]Capital AllocationDefense & Commercial Target Use CasesNew Mexico Manufacturing Expansion• $11.8M Funding Round• Led by Playground Global• $5M+ SpaceWERX Grants• GPS-denied drone swarm sensor fusion• Space-rated CSACs for LEO ALT-PNT satellites• M-Code GPS receiver frequency references• Data center & energy grid synchronization• Sandia National Labs partnership for VCSELs & PICs• Domestic characterization ops at CINT facility• Scaled vapor cell production infrastructure Co-founded by CEO Dr. Sristy Agrawal and Dr. Wale Lawal, the Boulder, Colorado-based startup will ex

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Universal scaling laws for correlated decay of many-body quantum systemsquantum-computing

Universal scaling laws for correlated decay of many-body quantum systems

MainUnderstanding the quantum dynamics of far-from-equilibrium open many-body systems is a major frontier in physics. From a fundamental perspective, the interplay between energy pumping and dissipation allows for the emergence of phases that transcend the paradigms established by equilibrium statistical physics. Examples in quantum optics include the superradiant laser1,2 and the driven Dicke phase transition3,4,5. From an applied standpoint, the full potential of quantum technologies—including quantum computing, quantum simulation and metrology—is realized only with large systems that remain coherent despite their coupling to a bath.In systems formed by many particles, the always-present vacuum fluctuations mediate long-range dissipative interactions that cannot be switched off, inducing correlated decay that may increase with system size. Such decay processes are collectively enhanced if the particles are tightly packed. Correlated decay may, thus, become the ultimate source of decoherence for many quantum technologies. For instance, it may alter the signal-to-noise ratio in metrology experiments such as atomic clocks or spin squeezing. Similarly, in large-scale quantum computers, it can lead to much shorter coherence times than the predicted timescales using independent noise models and may hinder quantum error correction6,7. On the other hand, correlated decay is a critical requirement for other applications, such as the development of new light sources1,2,8, the dissipative preparation of correlated many-body states9,10 or the protection of logical quantum information via dissipation11,12.Due to the exponential complexity associated with large quantum systems, exactly computing the largest decay rate is a formidable challenge. This problem remains unsolved except in trivial cases, such as permutationally symmetric models (for example, atoms coupled to a cavity) and non-interacting systems. In generic situations, finding the largest decay rate is as difficult a

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MIT builds shared quantum lab for cross-disciplinary research | ETIH EdTech News - EdTech Innovation Hubquantum-computing

MIT builds shared quantum lab for cross-disciplinary research | ETIH EdTech News - EdTech Innovation Hub

MIT builds shared quantum lab linking computing, biology and chemistry research Higher EducationResearch 25 Sept Written By Emma Thompson The Quantum Systems Laboratory will bring quantum computers and sensors into the same Building 39 facility as wet labs, electronics labs and other research spaces MIT’s Quantum Systems Laboratory will be based in Building 39 and bring quantum computing facilities together with biology, chemistry and electronics research spaces. Image: HGA Architects MIT is creating a shared research facility designed to put quantum computing and sensing alongside work in biology, chemistry and electronics, as the university expands its Quantum Initiative.The Quantum Systems Laboratory, or QSL, will be based in Building 39 and serve as the physical home of the MIT Quantum Initiative, known as QMIT. Plans include two double-height quantum computing rooms, as well as pump rooms, electronics labs and spaces for culturing tissues, preparing biological samples and working with chemicals.The practical idea is to shorten the distance between quantum specialists and researchers working on problems in other scientific fields.“We will have spaces for quantum computers and quantum sensors next to wet labs and chemistry labs and biology labs,” says Ian Waitz, MIT Vice President for Research and Jerome C. Hunsaker Professor of aeronautics and astronautics.“It is really intended to bring together people who have problems to solve with people with quantum expertise to see whether they can demonstrate quantum advantage for those particular problems. It’s designed to be a gathering place and a toolbox.”QMIT was launched in 2025 by MIT President Sally Kornbluth to support research across quantum science and engineering, with the university focusing on potential applications spanning science, industry and national security.A shared facility modeled on MIT.nanoMIT is looking to another of its research facilities, MIT.nano, as a model for how a shared physical environm

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IonQ Sees Fault-Tolerant Quantum Within Reach in 2 Years - MeriTalkquantum-computing

IonQ Sees Fault-Tolerant Quantum Within Reach in 2 Years - MeriTalk

Details By: Grace Dille Sep 24, 2026 3:32 pm IonQ Sees Fault-Tolerant Quantum Within Reach in 2 Years IonQ CEO Niccolo de Masi said advances in error correction could make fault-tolerant quantum systems affordable for governments and thousands of businesses within two years. IonQ, a quantum computing hardware and software company, expects advances in quantum computing over the next two years to put fault-tolerant systems within reach of governments and thousands of businesses, CEO Niccolo de Masi said on Sept 24. Speaking at the Quantum World Congress in College Park, Md., de Masi pointed to advances across IonQ’s computing, networking, sensing, and security portfolio as the company works to accelerate its roadmap and expand the use of quantum technologies beyond research settings. “With this kind of progress, in just the next year or two, full fault tolerance will be affordable within grasp of enterprises not just in the Fortune 500, but Fortune 5000, and for state and local government of all sizes, both here in the Five Eyes and across our broader allied community,” de Masi said. Fault tolerance is a key hurdle to building practical quantum computers because quantum bits, or qubits, are highly susceptible to errors. IonQ announced earlier this week that it demonstrated an end-to-end real-time quantum error correction decoder, which the company said removes a major bottleneck in fault-tolerant quantum computing. De Masi also highlighted IonQ’s work with the federal government on precision timing and navigation. He said IonQ is working toward GPS capabilities that are 1,000 times more accurate for the United States and its allies using technologies that include atomic clocks, quantum computing, and satellite capabilities. “This is a mission that we work with DARPA on,” de Masi said, adding that precision timing and navigation are increasingly important to national security and infrastructure resilience. IonQ received a $28 million contract extension from DARPA in Au

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Mesa Quantum Raises $11.8 Million to Scale Quantum Timing Systemsquantum-computing

Mesa Quantum Raises $11.8 Million to Scale Quantum Timing Systems

Insider Brief PRESS RELEASE — Mesa Quantum, the company developing the next generation of quantum sensing technology for integration at scale, today announced it has raised $11.8 million in funding led by Playground Global. The round accelerates the company’s transition from component-level development to the full system integration and scaled production of deployable quantum timing […]

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The Quantum Race Is Heating Up in the DC Metro Region - Clearance Jobsquantum-computing

The Quantum Race Is Heating Up in the DC Metro Region - Clearance Jobs

Five years can make a big difference in an emerging technology. Opening Day Two of Quantum World Congress 2026 in College Park, MD, Stu Solomon, founder and vice chair of Connected DMV, pointed back to a time when quantum computing still felt like something sitting well over the horizon. The science was extraordinary and the potential enormous, but when that potential might translate into practical impact was far less certain. Today, Solomon argued, the conversation has changed. “An industry is taking shape,” Solomon told the crowd, pointing to advances across computing architectures, logical qubits, error correction, networking, sensing, timing and cybersecurity. More importantly, he said, the focus is increasingly moving toward getting those technologies out of the lab and into real-world applications. That transition from research to application became the theme running through Solomon’s opening remarks. And while Quantum World Congress is being held in College Park, the ecosystem he described stretches across Maryland, Virginia and Washington, D.C. The Questions Around Quantum Are Changing The question is no longer simply whether researchers can build better quantum computers, sensors or networks. Increasingly, Solomon said, the questions are: “What can we do with them?” How can they be scaled and secured, and how can an ecosystem be built that translates scientific breakthroughs into economic growth, national security capabilities and improvements in people’s lives? Those questions also help explain why Quantum World Congress has expanded beyond conversations about the underlying science. The 2026 event brings together researchers and engineers alongside CEOs, entrepreneurs, investors, government leaders, universities and potential customers. The agenda stretches from fault-tolerant computing and quantum sensing to post-quantum cybersecurity, workforce development, commercialization and the intersection of quantum with artificial intelligence and high-performan

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Nature’s speed limit for thermalization is rooted in quantum informationquantum-computing

Nature’s speed limit for thermalization is rooted in quantum information

Researchers have established a quantifiable lower bound of τ ≥ τ Pl /2 on how quickly systems can reach thermal equilibrium, proving a long-held conjecture about a fundamental speed limit. The work demonstrates quantum mechanics prevents thermalization faster than half the Planckian timescale, a value determined by the reduced Planck constant, Boltzmann’s constant, and temperature. This universal limit, originally proposed to describe the conductance of superconductors, is now underpinned by quantum information theory and Hamiltonian estimation. These bounds, rooted in fundamental constants and a system’s intrinsic energy scale, establish operational limits on how quickly systems “settle” into a stable state. Planckian Timescale Defines Thermalization Speed The shortest time a system requires to reach thermal equilibrium is fundamentally limited by a value directly proportional to Planck’s constant and inversely proportional to temperature, a relationship now rigorously proven through quantum information theory. This establishes that no system can thermalize faster than a timescale of ℏ /( k B T ), previously a conjecture rooted in observations of chaotic systems and quantum gravity. This universal limit arises from the interplay between quantum information geometry and metrology, offering a new approach to understanding thermalization beyond traditional collisional models. Attempting to accelerate thermalization through arbitrarily fast interactions doesn’t circumvent the Planckian bound; instead, such a process would require preparing a system in a fixed state, effectively bypassing true thermalization. The analysis reveals a lower bound on thermalization time as well; systems cannot thermalize faster than τ Pl /2, meaning half the Planckian timescale represents a concrete, quantifiable limit. This framework also encompasses highly engineered processes, such as algorithms for many-body quantum cooling. Under these assumptions, standard thermal baths satisfying det

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UF’s ECE’s Laura Kim gets NIH grant for quantum endometriosis studyquantum-computing

UF’s ECE’s Laura Kim gets NIH grant for quantum endometriosis study

University of Florida electrical and computer engineering professor Laura Kim received a three-year NIH award to develop a diamond-based quantum sensing platform for earlier endometriosis detection. Affecting one in 10 women, endometriosis currently lacks reliable noninvasive diagnostic tools, a gap Kim’s team aims to address by detecting microscopic magnetic signals. Kim said, outlining the project’s goal to engineer quantum sensors capable of measuring previously inaccessible biological signatures. Amira Quevedo, M.D., believes Kim’s technology has the potential to fundamentally change how endometriosis is diagnosed.

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Element Six pushes diamond materials for quantum sensing and networksquantum-computing

Element Six pushes diamond materials for quantum sensing and networks

Element Six is presenting advances in synthetic diamond materials at the Quantum World Congress 2026 in Washington, U.S., positioning the technology as critical for building practical quantum systems. The company’s engineered diamonds offer advantages in size, weight, power, and deployability compared to other quantum approaches, addressing a key challenge in scaling up these technologies. “The future of quantum will depend not only on algorithms and hardware, but on the advanced materials that make these systems possible,” says Dr. Daniel Twitchen, CTO at Element Six. The company’s work ranges from sensors for healthcare to thin-film diamond supporting future quantum networks, utilizing manufacturing processes compatible with existing semiconductor facilities. Synthetic Diamond Enables Scalable Quantum Sensing, Networking, Computing Scalable manufacturing of three-inch wafer-scale single crystal diamond, established through a reproducible process between Element Six and Orbray in June 2026, directly addresses a critical bottleneck in quantum device production. This achievement moves beyond small-scale laboratory samples toward the larger substrates needed for commercial applications, a step previously limiting wider deployment of diamond-based quantum technologies. The larger wafers reduce per-unit costs and enable integration with existing semiconductor fabrication techniques, streamlining production for quantum sensors and computing components. Element Six has built upon over eighty years of synthetic diamond innovation to deliver these materials, positioning itself as a key enabler for the burgeoning quantum industry, the company says. The advantages of synthetic diamond extend beyond manufacturing ease; the material’s properties directly improve device performance in several key areas.

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Infleqtion Achieves 30 Entangled Logical Qubits on Its Sqale Quantum Computerquantum-computing

Infleqtion Achieves 30 Entangled Logical Qubits on Its Sqale Quantum Computer

Sqale reaches key 2026 roadmap milestone as Infleqtion builds toward 100 logical qubits and develops quantum applications with customers  LOUISVILLE, Colo. – September 24, 2026 – Infleqtion (NYSE: INFQ), a global leader in quantum computing and quantum sensing powered by neutral-atom technology, today announced it has achieved 30 entangled logical qubits using just 80 physical qubits on its Sqale™ quantum computing platform, delivering a key milestone on its 2026 roadmap. This achievement makes Infleqtion the first neutral-atom quantum computing company to reach 30 logical qubits on a commercial system. The breakthrough combines hardware and software co-design with an AI-assisted discovery that halves the physical gates needed for a key logical operation.  By entangling 30 logical qubits in a single, coherent quantum state, Infleqtion has validated the core architecture of its Sqale hardware and Superstaq software, on its roadmap to deliver 100 logical qubits by 2028.  “Getting 30 logical qubits to work together is hard, and our team has done it,” said Matt Kinsella, CEO of Infleqtion. “Co-design between our hardware and software enabled this demonstration with just 80 physical qubits. We’re moving quickly toward our target of 100 logical qubits in 2028, and we’re already developing applications with customers. The goal is to give them a quantum computer that can take on problems they can’t solve today.”  Unlike fragile physical qubits, which suffer rapid calculation decay from environmental noise, logical qubits group multiple physical qubits together using software protocols to ensure computational stability and accuracy. Infleqtion’s achievement of 30 logical qubits was experimentally confirmed by a signal that is approximately 1000x str

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BigBear.ai vs. IONQ: Comparing Revenue Trends Between an Artificial Intelligence Upstart and a Quantum Computer Companyquantum-computing

BigBear.ai vs. IONQ: Comparing Revenue Trends Between an Artificial Intelligence Upstart and a Quantum Computer Company

BigBear.ai: Seeking Stability After Earlier Quarterly Revenue DeclinesBigBear.ai (BBAI -1.73%) generates most of its revenue by delivering complex artificial intelligence and machine learning decision support tools, focusing heavily on cyber engineering, cloud infrastructure management, and large-scale data processing solutions for a highly specialized client base, particularly the U.S. government.It recently secured Dutch national regulatory approval for its Pangiam airport security screening software, and it simultaneously launched an expanded generative artificial intelligence platform designed specifically for use by government defense teams operating in classified network environments.IONQ: Recording Consistent Upward Revenue TrajectoriesIONQ (IONQ +4.42%) primarily earns its revenue by constructing general-purpose quantum computing systems and selling commercial access to those computers, facilitating this access both directly and through prominent third-party cloud computing platforms.It formally finalized its acquisition of the domestic semiconductor foundry SkyWater Technology, while simultaneously launching its sixth-generation commercial quantum computing platform and securing a contract extension for a specialized defense research program focused on developing scalable atomic clocks.CollapseIONQ & BBAI: Performance ComparisonKey Financial MetricsIONQ – IonQ$42.54+4.42% (+$1.80)BBAI – BigBear.ai$2.84–1.73% (-$0.05)Market Cap$17B52wk Range$25.89 - $84.64Gross Margin-3317.96%P/E Ratio-8.96EPS (TTM)$-4.55Market Cap$1.4B52wk Range$2.59 - $9.39Gross Margin27.92%P/E Ratio-13.26EPS (TTM)$-0.22IONQ – IonQ$42.54+4.42% (+$1.80)Market Cap$17B52wk Range$25.89 - $84.64Gross Margin-3317.96%P/E Ratio-8.96EPS (TTM)$-4.55BBAI – BigBear.ai$2.84–1.73% (-$0.05)Market Cap$1.4B52wk Range$2.59 - $9.39Gross Margin27.92%P/E Ratio-13.26EPS (TTM)$-0.22Why Revenue Matters for InvestorsRevenue helps market participants understand the baseline commercial demand for a particular bu

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An information-theoretic proof of the Planckian bound for thermalizationquantum-computing

An information-theoretic proof of the Planckian bound for thermalization

MainUnderstanding equilibration and thermalization from the underlying reversible quantum dynamics is one of the most fundamental, long-lasting open questions in physics1,2,3,4. One central aspect of thermalization in quantum many-body systems is the emergence of the Planckian dissipation time τPl (refs. 5,6), as given by:$${\tau }_{{\rm{Pl}}}=\frac{\hslash }{{k}_{{\rm{B}}}T}.$$ (1) This universal timescale grows inversely with temperature T and is determined by two fundamental constants in nature, namely the reduced Planck constant ℏ and the Boltzmann constant kB. Analogously to the ‘Planck time’ in quantum gravity, it is conjectured to represent the shortest timescale for thermalization. That is, the minimum time required to reach a Gibbs state starting from an arbitrary non-equilibrium distribution5,7,8,9,10,11.Originally, the concept of a ‘Planck scale of dissipation’, as given by equation (1), was coined by Zaanen to describe the universal behaviour of the conductance of superconductors above their critical temperature12,13. This behaviour was comprehensively empirically corroborated in ref. 14, which ignited the quest for an underlying microscopic explanation, tentatively put forwards for metals in refs. 15,16 and more recently in ref. 17, where a bound is provided for the emergence of hydrodynamic behaviour in many-body systems. In parallel, the concept of Planckian time has been linked to the rate of growth of chaos in many-body systems and field theories18,19,20,21,22.Despite the omnipresence of the Planckian time as a fundamental limit on the speed of dissipative or chaotic processes5,10, it is not difficult to come up with apparent violations of this conjecture. For instance, in collisional models, thermalization is described by letting the system interact with a bath made up of identical copies of the system in thermal equilibrium23. By letting these collisions take place arbitrarily fast, one realizes there is no fundamental restriction on the time requ

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Researchers Bound Precision Limits for Noisy Hamiltoniansquantum-computing

Researchers Bound Precision Limits for Noisy Hamiltonians

Fundamental limits exist regarding how accurately functions dependent on multiple properties within a physical system can be estimated when subject to environmental disturbances. Direct estimation of these functions offers advantages over first determining each individual property separately and this benefit increases with both sensing time and parameter count. Accurately determining multiple characteristics of a physical system is possible even when disturbances occur; direct measurement of combined properties is often superior to identifying each property individually. This benefit becomes more pronounced as sensing duration increases alongside the number of parameters being measured. Conditions enabling enhanced precision, known as Heisenberg-limited scaling, were identified by researchers which could improve future technologies reliant on precise measurements like those used in quantum sensors. Researchers have refined our understanding regarding how accurately we can measure multiple characteristics within complex physical systems when external disturbances exist; direct measurement of combined properties often surpasses identifying each property individually. This advantage grows as both sensing time increases and more parameters are measured simultaneously, offering potential benefits across diverse technologies reliant on precision such as advanced sensors. Understanding these limits requires considering that Hamiltonian parameters must be adjusted precisely to reveal inner workings, however measurements are always affected by Markovian noise. The team defined quantum Fisher information as a way to assess image clarity before analysis, revealing the amount of useful data contained in a quantum state. Single Parameter Embeddings Constrain Quantum Measurement Sensitivity A technique centred on optimising single-parameter embeddings tackles the complex problem of estimating functions dependent on multiple Hamiltonian parameters.

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Researchers Assess Two-Dimensional Materials for Scalable Quantum Hardwarequantum-computing

Researchers Assess Two-Dimensional Materials for Scalable Quantum Hardware

The ability to fabricate reproducible solid-state quantum processors is now closer thanks to an evaluation of whether manufacturing processes developed for conventional computer chips can also be used with two-dimensional materials. This assessment details both the opportunities and limitations presented by atomically thin crystals, as their unique interfaces may help overcome challenges like maintaining qubit coherence which can be compromised by imperfections introduced during fabrication. Reproducible manufacturing alongside reliable qubit operation are requirements for developing solid-state quantum processors, because imperfections introduced during fabrication can reduce how long qubits maintain information. Two-dimensional materials, crystals one or a few atoms thick, offer potential solutions due to their unique atomic structure and interfaces that may mitigate these issues. These materials are being developed for conventional computer chips, meaning existing chip production techniques could be adapted for building quantum devices. Maintaining qubit coherence is vital as any disturbance leads to information loss; it’s akin to keeping a spinning top balanced. Two-dimensional materials offer potential solutions because their unique atomic structure may overcome fabrication imperfections that shorten how long qubits retain data. These crystals also utilise van der Waals interfaces, gentle connections between layers similar to magnets weakly adhering to a refrigerator door, allowing for novel device designs. Researchers at Eindhoven University of Technology assess the opportunities and limitations of using 2D materials in compatible quantum hardware, but further investigation is needed to determine whether current manufacturing processes can truly deliver scalable and reliable quantum processors. Extended Transmon Coherence via Low-Loss Hexagonal Boron Nitride Capacitors fabricated with Established Processes Transmon coherence reaching twenty-five microseconds h

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Superconducting Transistors to Solve Quantum Computing Woes - AOL.comquantum-computing

Superconducting Transistors to Solve Quantum Computing Woes - AOL.com

A quantum computer can be an ungainly thing, because even the most elegant qubit-housing cryostat usually sprouts a thicket of control cables.Most qubits don’t work above a fraction of a degree above absolute zero, but the conventional electronics that control the qubits don’t work in the cryogenic cold. Hence connecting cables need to route information out of the cryostat. The more qubits a computer has, the more cables it needs. More than an eyesore, this overgrowth is a problem for scaling quantum computers. The wires are a pathway for heat that can destabilize the sensitive qubits.Engineers can clear some of the cable weeds if they get control electronics that work in the cold, next to the chilly qubits. A month-old startup named S-Transistors has a plan: Make the needed circuits out of superconducting transistors that can operate in the qubit’s ultra-cold environment.Spun off from Finland’s VTT Technical Research Centre, the Espoo-based firm did not invent the superconducting transistor. Instead, S-Transistors thinks they have made a breakthrough in making superconducting transistors in the fab. They plan to put their first circuits on the market in 2027.“We don’t claim to make the best superconducting transistors, but we can make a lot of them on wafer-scale, and we can actually be the first to start combining them into new kinds of superconducting integrated circuits that didn’t exist before,” says Heorhii Bohuslavskyi, CEO and co-founder of S-Transistors and formerly a researcher at VTT.Making a graphene sandwichThe heart of S-Transistors’s technology is the Josephson junction.A Josephson junction consists of two superconductors sandwiching a nanoscale layer of another material. A key feature of a superconductor is that, at a cold enough temperature, electric current will flow through the superconductor with no resistance and no loss. Ordinarily, the Josephson filling does absolutely nothing to stop this. But increase the current past a certain limit—the so-

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