Quantum Networking & Communications: Quantum Internet & Entanglement
Quantum internet news: quantum communications, quantum repeaters, entanglement distribution, quantum teleportation. Network architecture updates.
Quantum networking connects distant quantum processors via entanglement distribution, enabling distributed quantum computing, provably secure communications, and quantum sensor arrays.
India's Quantum Networking and Communications Initiatives
India's National Quantum Mission includes quantum communication as a major vertical with specific deliverables: satellite-based secure quantum communications between ground stations over 2000 kilometers; long-distance secure quantum communications with other countries; inter-city quantum key distribution over 2000 km; and multi-node quantum networks with quantum memories.
The IITM C-DOT Samgnya Technologies Foundation at IIT Madras serves as the Thematic Hub on Quantum Communication. Established in partnership with the Centre for Development of Telematics (C-DOT), the hub focuses on quantum cryptography, post-quantum security, QKD networks, quantum memory, quantum repeaters, and satellite-enabled quantum communication.
ISRO plans satellite-based quantum communication missions to demonstrate space-based quantum links. The Society for Applied Microwave Electronics Engineering & Research (SAMEER) in Mumbai develops indigenous QKD systems. The Centre for Development of Telematics (C-DOT) integrates quantum communication with national telecom infrastructure.
The NQM targets operational quantum communication networks connecting major Indian cities, with potential applications in government secure communications, financial transaction security, and defense applications.
quantum-computingNew analysis reveals non-classical features in quantum measurements
Researchers Min Namkung, Ilhwan Kim, and Hyang-Tag Lim from the Korea Institute of Science and Technology (KIST) demonstrate that quantum non-demolition measurements possess inherent contextual features, revealing a key aspect of their nonclassical behaviour. The theoretical work extends beyond simple state discrimination to encompass sequential discrimination and probabilistic quantum cloning, while considering the impact of noise. Identifying features that prevent classical replication broadens understanding of nonclassicality and offers insights relevant to the development of future quantum technologies. Contextuality extends to sequential discrimination and quantum cloning regimes Analysis reveals that contextual features, characteristics preventing classical replication of quantum behaviour, now extend to sequential unambiguous discrimination and probabilistic quantum cloning, a sharp expansion from previous limitations on unambiguous state discrimination alone. Previously, classical models could mimic quantum non-demolition measurements at an operational level, but specific regimes where this replication fails have been identified, demonstrating a definitive quantum advantage. Quantum non-demolition measurements inherently possess contextual features, allowing for advantages in quantum communication and sensing, as these features enable more efficient information processing. The significance of this lies in the fundamental understanding of what constitutes a genuinely quantum process, distinct from one that merely appears quantum but could be simulated classically. Quantum non-demolition measurements support various quantum technologies, including quantum communication. Their operational structure can be replicated by a classical model, prompting investigation into features preventing such models from reproducing quantum measurements. The analysis demonstrates contextual features inherent in the structure of quantum non-demolition measurements, revealing the n
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quantum-computingQuantum Key Distribution Becomes More Practical with New Self-Testing Methods
A new approach to device-independent quantum key distribution enhances the security of quantum communication. Andreas Bluhm and colleagues at theLeibniz University Hannover, RWTH Aachen University, and the University of Grenoble Alpes demonstrate a method to improve existing protocols by incorporating local self-tests, bridging the gap between highly abstract DIQKD and more practical, device-dependent quantum key distribution. The research provides a rigorous framework for transferring optimisation problems from self-testing to the device-dependent setting, illustrated using a routed BB84 protocol. By enabling parties to verify the integrity of their local quantum devices, this represents a key step towards building strong and trustworthy quantum key distribution systems. Routed Bell tests and mathematical optimisation unlock practical quantum key distribution A perfect CHSH violation, a key milestone in Bell tests, now enables key rates equivalent to those in a device-dependent quantum key distribution system, a feat previously unattainable without compromising security assumptions. The Claustner-Horne-Shimony-Holt (CHSH) inequality is a mathematical expression derived from Bell’s theorem, quantifying the degree to which quantum correlations violate local realism. Achieving a perfect violation, a value of 2 for the CHSH parameter, signifies maximal entanglement and non-classicality. Previously, attaining such a violation while maintaining the security guarantees of DIQKD proved challenging. Researchers at the University of Strathclyde and the National University of Singapore used routed Bell-test setups, where entangled particles traverse multiple paths to verify device integrity, alongside a new mathematical framework to transfer optimisation problems from self-testing to device-dependent scenarios. These routed setups are crucial as they allow for the verification of internal device settings without relying on trusted assumptions about the devices themselves
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quantum-computingQuantum Dynamics’ Subtle Signals Now Reveal Truly Quantum Behaviour
Rajeev Gangwar and Ujjwal Sen at Technion, Israel Institute of Technology, present a thorough review of quantum non-Markovianity, addressing the long-standing difficulty in separating genuine quantum effects from classical or non-genuine quantum origins. The review surveys recent advances in characterising quantum non-Markovianity through information backflow and explores how different theoretical frameworks, including those based on state distinguishability, channel divisibility, and process tensors differentiate between genuine and apparent memory effects. By clarifying the conceptual and operational aspects of these processes, the review provides a key foundation for future progress in quantum information science and technology. Quantifying environmental feedback to characterise quantum memory effects Information backflow, the return of influence from an environment to a quantum system, proved central to this detailed review of quantum dynamics. It carefully tracks how information initially leaving the system returns, revealing a ‘memory’ of past states akin to a ball rolling on a rough surface remembering previous bumps and dips. This concept stems from the open quantum systems paradigm, where a system of interest inevitably interacts with its surrounding environment, leading to decoherence and dissipation of quantum information. Quantifying this backflow enables disentangling genuinely quantum behaviours from classical influences, a long-standing challenge in the field. This concept stems from the open quantum systems’ paradigm, where a system interacts with its environment, leading to decoherence and dissipation. The significance of this lies in the potential to harness these memory effects for quantum computation and communication, where preserving coherence is paramount. Without understanding the source of memory, building robust quantum devices remains problematic. This capability is crucial for developing more robust quantum technologies and understanding
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quantum-computingEPB joins Southeastern Quantum Collaborative to Support Regional Quantum Development
Insider Brief EPB has joined the Southeastern Quantum Collaborative (SQC), a regional initiative led by UAH to advance quantum technology development and applications. The collaboration brings together universities, industry, and government to strengthen workforce development and position the Southeast as a quantum innovation hub. EPB’s existing quantum network and upcoming IonQ system reinforce Chattanooga’s role in providing commercial access to quantum infrastructure. PRESS RELEASE — EPB has joined the Southeastern Quantum Collaborative (SQC) as an inaugural member. SQC is an association of universities, technology companies and research institutions working together to accelerate the advancement and real-world application of quantum technologies across the Southeast. Led by The University of Alabama in Huntsville (UAH), the collaborative brings together organizations from academia, industry and government to strengthen regional leadership in quantum information science while developing the workforce needed to support emerging quantum technologies. The effort is also designed to help position the Southeast as a global hub for quantum innovation, supporting economic growth, national security and next-generation technology development. EPB’s participation reflects Chattanooga’s growing role as a center for advanced technology and innovation. In 2023, EPB launched the EPB Quantum Network®, the nation’s first commercially available, industry-led quantum network, lowering barriers to the development of a wide range of quantum technologies. Later this year, with the completion of an IonQ Forte Enterprise computer, EPB Quantum Center℠ will become the first U.S. quantum technology center to provide commercial access to both quantum networking and quantum computing resources. EPB Quantum Center will provide a destination to explore quantum possibilities while benefi
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quantum-computingEPB Joins Southeastern Quantum Collaborative to Expand Regional Innovation
EPB has become an inaugural member of the Southeastern Quantum Collaborative (SQC), an association dedicated to advancing quantum technologies throughout the Southeast. This move underscores Chattanooga’s emergence as a hub for innovation, building on EPB’s 2023 launch of the nation’s first commercially available quantum network and the forthcoming EPB Quantum Center, which will combine quantum networking and computing access. “Quantum technology represents a significant innovation opportunity,” said Janet Rehberg, president and CEO-elect, EPB, emphasizing the company’s commitment to fostering a regional ecosystem for quantum development. By uniting universities, technology companies, and research institutions, the SQC aims to strengthen regional leadership in quantum information science and drive economic growth across the Southeast. EPB Quantum Network Enables First U.S. Commercial Access The quantum technology center will offer commercial access to both quantum networking and quantum computing resources, a capability previously unavailable to researchers and developers. This dual access is enabled by the completion of an IonQ Forte Enterprise computer, extending the capabilities of the existing EPB Quantum Network beyond communication to encompass computational power. The network, serving EPB’s 600-square-mile area in and around Chattanooga, Tennessee, is designed to lower barriers to entry for a broad range of quantum technology development, fostering innovation beyond theoretical research. This commitment to accessibility is further underscored by EPB’s partnership with the University of Tennessee at Chattanooga (UTC); UTC became the first American university to host a node on a commercially available quantum network through its connection to the EPB Quantum Network, facilitating new research in quantum communications and networking. The collaborative spirit extends to the recently announced Institute for Quantum Innovation, a joint effort between EPB and Vande
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quantum-computingUniversity of York Contributes to Mission Advancing Secure Global Quantum Networks
Technology originating from the University of York’s Institute for Safe Autonomy is now in orbit, following the successful March 30 launch of the “Satellite Platform for Optical Quantum Communications” (SPOQC) mission aboard a SpaceX Transporter-16 rocket from California. The satellite, which reached Low Earth Orbit at an altitude of 500km, is designed to gather critical data for building ultra-secure global quantum networks, extending these capabilities beyond the limitations of terrestrial fiber optics. SPOQC carries two distinct “quantum payloads” to test different communication methods, increasing the likelihood of success under varying conditions; one developed at York uses light signals at a quantum level. “The payload developed by the York team will allow for testing novel quantum communication protocols in future missions,” said Dr. Rupesh Kumar, lecturer in experimental quantum communications at the University of York, as the mission advances the UK’s standing in this vital area of national security and technological competitiveness. SPOQC Satellite Launches to Advance Quantum Communications Unlike conventional encryption vulnerable to increasingly powerful quantum computers, quantum secure communications offer a future-proofed alternative for unhackable data transfer. While regional quantum links already exist via fibre networks like the UK’s Quantum Network, satellite systems represent the only viable path toward truly global, resilient infrastructure. One payload, developed by Dr. Rupesh Kumar and his team at the University of York, utilizes light signals similar to traditional telecom but at a quantum level; the other, from the University of Bristol, employs individual photons to carry data. Kumar anticipates interaction with the York Optical Ground Station (YOGS) and other facilities worldwide. This mission, a culmination of six years of research and development led by the Quantum Communications Hub and now managed by the IQN Hub, unites five UK resear
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quantum-computingIs Cisco’s Quantum Networking Push With Atom Computing Reshaping Its AI Infrastructure Story (CSCO)? - Yahoo Finance
Is Cisco’s Quantum Networking Push With Atom Computing Reshaping Its AI Infrastructure Story (CSCO)? Yahoo Finance
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quantum-computingQuantum Computing Inc. Deploys Dirac-3 Quantum Machine on Quantum Corridor Network
Quantum Computing Inc. Deploys Dirac-3 Quantum Machine on Quantum Corridor Network Quantum Computing Inc. (QCi) has installed its Dirac-3 quantum optimization machine at the Digital Crossroad Data Center in Hammond, Indiana. This deployment marks the first installation of the Dirac-3 in a commercial data center, where it is now integrated into the Quantum Corridor network. The machine is accessible to institutional and commercial clients via the network’s existing subscription and service framework. This placement transitions the hardware from a laboratory environment into a functional IT ecosystem serving the Chicago and Northwest Indiana regions. The Dirac-3 is a quantum optics-based system that utilizes thin-film lithium niobate (TFLN) and integrated photonics. The hardware is designed to operate at room temperature with low power consumption, distinguishing it from superconducting architectures that require cryogenic cooling. The connection to the machine is secured by Toshiba’s Quantum Key Distribution (QKD) technology over a 10G commercial link. The underlying Quantum Corridor infrastructure supports a backbone capacity of 40 terabits per second (Tbps) with a round-trip latency of 0.274 milliseconds, connecting data centers and research hubs between Illinois and Indiana. Technical applications for the Dirac-3 include discrete optimization tasks such as multi-asset portfolio management, fraud detection, and operational risk assessment. By addressing variables that are computationally intensive for classical systems, the machine is intended to support data-driven decision-making for government and enterprise users. As a participant in the Bloch Tech Hub and the Chicago Quantum Exchange, Quantum Corridor aims to use this deployment to establish a foundational “quantum superhighway” for regional research and industrial collaboration. For technical details on the Dirac-3 deployment and Quantum Corridor infrastructure, consult the official Quantum Computing Inc. ann
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quantum-computingEPB Joins Southeastern Quantum Collaborative to Support Regional Infrastructure Integration
EPB Joins Southeastern Quantum Collaborative to Support Regional Infrastructure Integration EPB has joined the Southeastern Quantum Collaborative (SQC) as an inaugural member. Led by the University of Alabama in Huntsville (UAH), the SQC is a regional association of academic, industrial, and government organizations—including IBM, D-Wave, and IonQ—tasked with coordinating quantum information science research and workforce development across the Southeast. EPB’s role in the collaborative involves providing technical oversight and utilizing its fiber-optic footprint to transition quantum technologies from laboratory research to industrial applications in energy, logistics, and defense. The involvement is centered on the EPB Quantum Network, a commercially available fiber-optic network established in 2023. Later in 2026, EPB intends to complete the installation of an IonQ Forte Enterprise quantum computer at the EPB Quantum Center. This deployment will make the facility the first U.S. technology center to provide integrated commercial access to both a trapped-ion quantum computer (delivering 36 algorithmic qubits) and a photonics-based local quantum network within a single managed infrastructure. Regional coordination through the SQC builds on existing partnerships with the University of Tennessee at Chattanooga (UTC), which hosts a node on the EPB network, and the Vanderbilt University Institute for Quantum Innovation. EPB’s background in the sector includes previous research with Oak Ridge National Laboratory and Los Alamos National Laboratory, where the entities demonstrated the implementation of quantum security protocols for the management of automated power grids. These efforts are designed to integrate quantum-resilient communications and predictive maintenance algorithms directly into the regional energy infrastructure. For the complete technical details on the regional collaboration and Chattanooga’s quantum hardware roadmap, consult the official EPB announcem
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quantum-computingRandomizing Quantum Measurements Guarantees Stable, Predictable System Behaviour
Researchers led by Tristan Benoist have demonstrated that the incorporation of randomness into the selection of measurement probes regularises quantum trajectories, ensuring convergence to a unique, stable probability measure. The study establishes a novel concept of ergodicity, termed ‘multiplicative primitivity’, for quantum channels, offering a nuanced understanding of the relationship between established properties like primitivity and positivity improving. By calculating invariant measures for standard quantum channels and examining several examples, the work significantly advances the theoretical framework for analysing quantum systems undergoing repeated, indirect measurements Non-singular randomization unlocks φ-irreducibility and multiplicative primitivity in quantum A fundamental shift in the predictable behaviour of quantum trajectories has been attained, achieving φ-irreducibility where previously they were generally not. Quantum trajectories, representing the probabilistic evolution of a quantum system under continuous observation, are typically modelled as Markov chains. These chains describe the system’s state evolving step-by-step, with each step dependent only on the previous one. However, the standard theory often struggles with ensuring these trajectories converge to a stable, predictable outcome, particularly when dealing with indirect measurements. This improvement hinges on non-singular randomization, a technique ensuring purification, the tendency of quantum states to approach purity, and enabling a unique invariant probability measure vital for reliable calculations. Purification, in this context, refers to the increase in the diagonal elements of the density matrix representing the quantum state, indicating a more well-defined and less mixed state. The concept of ‘multiplicative primitivity’, a new definition of ergodicity for quantum channels, positions it between established properties of primitivity and positivity improving, offering a mo
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quantum-computingUK Launches SPOQC Satellite for Quantum Communications Research
Insider Brief PRESS RELEASE — A landmark space mission built on UK research excellence is set to accelerate progress in quantum communications, as the Heriot-Watt University led Integrated Quantum Networks (IQN) Hub launches the pioneering “Satellite Platform for Optical Quantum Communications” (SPOQC). Emerging from research and development efforts led by the preceding Quantum Communications Hub […]
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quantum-computingmemQ Secures $10M Series A to Develop Distributed Quantum Networking Hardware
memQ Secures $10M Series A to Develop Distributed Quantum Networking Hardware memQ, a University of Chicago spin-out, has closed a $10 million Series A financing round co-led by Quantonation and Ocean Azul Partners. The funding is allocated toward the development and commercialization of the company’s xQNA (Extensible Quantum Network Architecture) portfolio. The primary technical objective is to enable modular, scale-out configurations for quantum computers, allowing separate quantum processing units (QPUs) to be networked over standard optical telecommunication links. This approach aims to address the current limitations of monolithic quantum architectures by facilitating distributed quantum computing and cooperative processing across local and wide-area networks. The company’s hardware suite includes Quantum Network Interface Controllers (QNICs) designed to interface various qubit modalities with a network without decohering the quantum state. Supporting this infrastructure are Quantum Memory Modules (QMMs), which provide stable storage for entanglement operations, and a Quantum Control System (QCS) for sub-nanosecond orchestration of distributed tasks. On the software side, memQ’s xDQC (Distributed Quantum Compiler) manages workload allocation across the network based on available quantum resources. The architecture is built using commercial fabrication processes and is intended to be qubit-agnostic, supporting connectivity regardless of the underlying hardware structure of the connected systems. Market analysis by Global Quantum Intelligence (GQI) indicates that memQ’s use of standard photonic integrated circuits (PICs) and commercial fab platforms is a viable path for delivering quantum networking at scale. This modular strategy is currently being evaluated by hardware developers such as Atom Computing to support the scaling requirements of neutral-atom systems. By providing the components necessary for “blind” cloud quantum computing and secure quantum network
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quantum-computingQuantum Encryption Gains Security with New Pulse Verification Technique
Researchers at Hokkaido University, led by Toshiya Tajima, have developed a new method for verifying the reliability of quantum key distribution (QKD) systems, a crucial element in establishing secure communication networks. They present a practical test, grounded in Hong-Ou-Mandel (HOM) interference, to confirm the indistinguishability of pulses transmitted by a QKD system. Any discernible difference between these pulses could introduce vulnerabilities, potentially allowing undetected eavesdropping. Their experiment, utilising a high-speed QKD transmitter operating at 1.25GHz and implementing the decoy BB84 protocol, achieved a consistent HOM visibility of approximately 0.3 across multiple quantum states, confirming that the modulation process does not compromise pulse indistinguishability. The research offers a robust, fibre-optic based method for QKD security certification that avoids reliance on assumptions about specific quantum properties. Simplified indistinguishability verification streamlines quantum key distribution security HOM interference visibility, a key metric for assessing quantum communication security, reached a consistent value of 0.3 across multiple quantum states. This level of visibility confirms that the modulation process within the QKD transmitter does not compromise the indistinguishability of transmitted pulses, a critical threshold for preventing eavesdropping. Previously, detailed spectral and waveform analysis was required for indistinguishability verification, a process demanding specialised equipment and expertise. Now, a streamlined quantum-optical method offers a practical alternative, avoiding assumptions about specific quantum properties and reducing the complexity of security assessments. The significance of this lies in the ability to efficiently and reliably certify the security of QKD systems without needing to characterise the precise quantum state of each emitted photon. The demonstrated technique utilises standard fibre-op
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quantum-computingEntangled Photons Display 97.1 Per Cent Interference with New Chip Design
A high-visibility Franson interference is achieved using photonic integrated circuits at telecom wavelengths. Ramin Emadi and colleagues at CNR, INO, in a collaboration between CNR, INO, LENS, the University of Florence, and QTI srl, have created a compact and stable system for generating and analysing entangled photons. The system delivers a two-photon interference visibility of 97.1%, alongside a coincidence-to-accidental ratio exceeding 1000, with 1.7mW of pump power. This represents a sharp advance in photonic quantum information processing, offering one of the key Franson-interference visibilities reported for a fully passive, fibre-integrated platform. High-visibility entanglement via passively-stabilised integrated photonics Entanglement measures now demonstrate a Franson interference visibility of 97.1%, a substantial improvement over previous systems which struggled to exceed 95% without active stabilisation. This threshold is important for reliable quantum key distribution and advanced quantum networks, previously hampered by the instability of maintaining such high visibility. The new system achieves this landmark result using a compact, passively-stabilised platform integrating cascaded periodically poled lithium niobate waveguides with photonic integrated circuits. The new design eliminates the need for complex active phase control, simplifying operation and reducing system size. It maintains a coincidence-to-accidental ratio exceeding 1000 at a pump power of 1.7mW. A narrow-linewidth continuous-wave pump and dense wavelength-division multiplexing, a technique for transmitting multiple signals over fibre optics, have enabled a heralding efficiency of 4.8% in generating energy-time entangled photon pairs. The system maintains a coincidence-to-accidental ratio exceeding 1000 at a pump power of only 1.7mW, indicating a strong signal amidst background noise. Relying instead on thermal tuning for phase scanning simplifies the platform’s design and improves s
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quantum-computingCavilinQ Secures $8.8M Seed Round to Architect the Interconnect Layer for Scalable Quantum Systems
Insider Brief CavilinQ raised $8.8 million in seed funding to develop interconnect hardware aimed at scaling quantum computers beyond single-processor systems. The company is building photonic links to connect multiple quantum processors into modular, distributed computing architectures. Funding will support lab development, team expansion, and early demonstrations of its quantum networking technology. PRESS RELEASE — CavilinQ, a quantum hardware startup, today announced it has raised $8.8 million in seed funding to develop the interconnect hardware necessary to scale quantum computers beyond today’s single-processor limits. The round was led by QVT, with participation from Safar Partners, MFV Partners, Serendipity Capital, and Harper Court Ventures. The quantum industry has reached exciting milestones by performing verifiable calculations that challenge classical supercomputers. However, achieving broad, reliable real-world impact remains limited by the scaling challenge. To address this, CavilinQ is developing cavity-enhanced photonic links that enable individual quantum processors to operate together as modular, high-performance clusters. “While we’ve seen impressive demonstrations of quantum utility on specialized tasks, solving real-world problems has been limited by the physical limits of current isolated processors,” said Shankar G. Menon, CEO of CavilinQ. “We are building the interconnects that unify isolated processors into one distributed processor, providing the infrastructure to make large-scale, fault-tolerant computing a reality.” The company’s approach leverages high-fidelity light-matter interfaces, a field pioneered by its scientific co-founders Mikhail Lukin (Harvard University) and Hannes Bernien (University of Chicago / University of Innsbruck). While the technology is platform agnostic, CavilinQ will initially demonstrate integration with neutral atom quantum processors, a leading modality for large-scale quantum processing. “With recent advance
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quantum-computingTwo-Qubit Models Learn Beyond Classical Simulation with 0.0001 Accuracy
Nathan Roll from Stanford University and colleagues present the first mechanistic interpretability study of these models, focusing on how they learn and store information. The research reveals that single-qubit models replicate classical strategies, while two-qubit models use inter-qubit entanglement to encode contextual information, a finding supported by strong causal testing. However, the study also highlights a key limitation; this entanglement-based strategy proves vulnerable to noise when implemented on actual quantum hardware, with only classical approaches remaining strong. These results demonstrate mechanistic interpretability as a valuable technique for understanding quantum language models and expose a fundamental trade-off between noise resilience and expressive power. Multi-qubit entanglement unlocks demonstrably quantum behaviour in recurrent neural networks Entanglement measures now demonstrate a substantial performance divergence. Two-qubit quantum recurrent neural networks (QRNNs) achieved a statistically significant distinction from classical models, with a p-value less than 0.05. Causal gate ablation, where connections were disabled, revealed that disrupting the CNOT gate, responsible for entanglement, fundamentally altered the two-qubit model’s internal processing. Tracking von Neumann entanglement entropy showed that context information is actively encoded in inter-qubit entanglement, with the degree of quantum correlation between qubits directly reflecting information retention. Experiments indicated that these entanglement-based strategies degraded to chance performance on real quantum hardware, highlighting a significant gap before these benefits translate into practical, noise-resilient applications. Further investigation will focus on whether this entanglement persists in larger quantum systems and how to mitigate the effects of noise to unlock its full potential. Entanglement enables distinct quantum memory but proves susceptible to enviro
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quantum-computingmemQ Closes $10M Series A Funding Round
memQ has secured 10 million in Series A funding, led by Quantonation and Ocean Azul Partners, to advance its quantum networking solutions for distributed quantum computing. The Chicago-based company is focused on overcoming a critical limitation of current quantum computers: their inability to effectively communicate and scale via existing networks, a roadblock to the modular configurations common in high-performance computing. memQ’s technology encompasses quantum network interface controllers, memory modules, control systems, and a distributed quantum compiler designed to connect diverse quantum systems using standard optical telecom links. “We see in memQ the potential to unlock and accelerate the power of quantum across our entire portfolio, as well as the industry at large, and to be a clear industry leader in that process,” stated Christophe Jurczak, founding partner at Quantonation, reflecting confidence in memQ’s role as the quantum computing market, forecasted to reach 100 billion by 2035, matures. 10M Series A Funding Accelerates Quantum Networking Solutions The field of quantum computing is expected to grow substantially, with projections estimating a 100 billion market by 2035, and the quantum communications subsector potentially reaching 15 billion. However, a critical obstacle to realizing this potential has been the difficulty of networking disparate quantum systems. This investment will accelerate the development and deployment of technologies designed to connect quantum computers, enabling modular expansion and collaborative processing capabilities currently limited by conventional networks. This approach utilizes chip-scale solutions intended to be efficient, powerful, and easily integrated into existing infrastructure. The significance of memQ’s work extends beyond simply connecting quantum computers; it is a crucial step towards achieving the full promise of quantum computation. Andre Konig, CEO of Global Quantum Intelligence, reported that his c
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quantum-computingmemQ Raises $10 Million in Series A
Insider Brief memQ raised $10 million in a Series A round co-led by Quantonation and Ocean Azul Partners to advance its quantum networking technology for distributed quantum computing. The company reports that its platform enables different quantum systems to connect and operate together over optical telecom links, addressing a key limitation in scaling quantum computing. According to the company and industry analysts, quantum networking capabilities like memQ’s will be essential for enabling modular, large-scale quantum systems and unlocking applications such as secure networking and distributed processing. PRESS RELEASE — memQ™, the industry leader in quantum networking solutions for distributed quantum computing, announced today the closing of its $10M Series A round of financing. The round was co-led by Quantonation and Ocean Azul Partners, with syndicate participation from both existing and new investors. Quantum computing is the next major shift in computing, forecasted to become a $100B market by 2035 according to McKinsey & Company; in that the quantum communications subsector alone is projected to reach up to $15B. Key workloads include quantum secure networking, distributed quantum computing, blind quantum computing, and quantum sensing. Each of these are expected to require the ability to network quantum-capable systems across a range of distances, and potentially across varied quantum computer architectures and qubit modalities. “Quantonation was the industry’s first venture fund dedicated to quantum technologies and deep physics, recognizing the potential for quantum systems to transform our use of information,” stated Christophe Jurczak, founding partner at Quantonation.“We see in memQ the potential to unlock and accelerate the power of quantum across our entire portfolio, as well as the industry at large – and to be a clear industry leader in that process.” The memQ xQNA portfolio provides the core components needed
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quantum-computingInformation-Theoretic Solutions for Seedless QRNG Bootstrapping and Hybrid PQC-QKD Key Combination
--> Quantum Physics arXiv:2603.26907 (quant-ph) [Submitted on 27 Mar 2026] Title:Information-Theoretic Solutions for Seedless QRNG Bootstrapping and Hybrid PQC-QKD Key Combination Authors:Juan Antonio Vieira Giestinhas, Timothy Spiller View a PDF of the paper titled Information-Theoretic Solutions for Seedless QRNG Bootstrapping and Hybrid PQC-QKD Key Combination, by Juan Antonio Vieira Giestinhas and Timothy Spiller View PDF HTML (experimental) Abstract:This paper considers two challenges faced by practical quantum networks: the bootstrapping of seedless Quantum Random Number Generators (QRNGs) and the resilient combination of Post-Quantum Cryptography (PQC) and Quantum Key Distribution (QKD) keys. These issues are addressed using universal hash functions as strong seeded extractors, with security foundations provided by the Quantum Leftover Hash Lemma (QLHL). First, the 'randomness loop' in QRNGs -- the requirement of an initial random seed to generate further randomness -- is resolved by proposing a bootstrapping method using raw data from two independent sources of entropy, given by seedless QRNG sources. Second, it is argued that strong seeded extractors are an alternative to XOR-based key combining that presents different characteristics. Unlike XORing, our method ensures that if the combined output and one initial key are compromised, the remaining key material retains quantifiable min-entropy and remains secure in exchange of longer keys. Furthermore, the proposed method allows to bind transcript information with key material in a natural way, providing a tool to replace computationally based combiners to extend ITS security of the initial key material to the final combined output. By modeling PQC keys as having HILL (Hastad, Impagliazzo, Levin and Luby) entropy, the framework is extended to hybrid PQC-QKD systems. This unified approach provides a mathematically rigorous and future-proof mechanism for both randomness generation and secure key management agai
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quantum-computingPodcast with Tom Darras, CEO and Co-founder, Welinq
Yuval Boger interviews Tom Darras, CEO and co-founder of Welinq. They discuss how quantum networking uses shared entanglement to interconnect quantum processors, enabling modular scale-out clusters and quantum-safe connectivity between data centers. Tom explains the technical building blocks—qubit-photon interfaces, optical networks, entangled photon sources, and especially quantum memories—as well as the performance metrics that matter most, like entanglement generation rate, fidelity, and memory lifetime. They also cover Welinq’s Arachne compiler for distributing circuits across multiple QPUs, why networking is becoming a consensus scaling strategy across modalities, and how “quantum-augmented data centers” are starting to become real initiatives. Transcript Yuval Boger: Hello Tom, and thank you for joining me today. Tom Darras: Thank you. Yuval: So, who are you and what do you do? Tom: Well, it’s a real pleasure for me to be here today. My name is Tom Darras. I’m the CEO and co-founder of Welinq. And at Welinq we build networking technologies that connect quantum computers together. Our goal is to provide the entire stack of networking solutions that will allow us to deploy clusters of quantum computers in data centers all around the world. Yuval: When people talk about networking, sometimes they talk about achieving a very large number of qubits — sort of scale-out versus scale-up. Because it’s about networking separate quantum computers, sometimes it’s about secure communication. So which part are you targeting? Tom: So we are targeting typically all of them. What we are doing at Welinq is developing the technology to master and share entanglement between quantum systems, and then depending on the scale at which you manage to share this entanglement, you can work on a variety of applications. So of course for us the main application we are looking at is quantum computer interconnect, where the goal is to take several intermediate-s
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