DOE National Quantum Centers Demonstrate Improved Ion Trap Manipulation with Cryogenic Circuits
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A collaboration between the Quantum Science Center and the Quantum Systems Accelerator has yielded a significant advance in ion trap manipulation, as researchers from Fermi National Accelerator Laboratory and MIT Lincoln Laboratory successfully demonstrated control of ions using in-vacuum cryoelectronics. This proof-of-principle experiment addresses a key obstacle to building scalable quantum computers by reducing thermal noise and improving sensitivity—a challenge exacerbated by the extensive wiring currently required between room-temperature electronics and cryogenic ion traps. “This remarkable research integrates state-of-the-art capabilities in quantum technologies to deliver an exciting new direction for scalable ion trap quantum computing using cryoelectronic control chips,” said Travis Humble, director of the Quantum Science Center. By integrating Fermilab-developed cryoelectronics directly into MIT Lincoln Laboratory’s ion-trap platform, the team has paved the way for systems potentially supporting tens of thousands of electrodes, accelerating the timeline for realizing large-scale quantum computation. DOE Centers Enable Fermilab & MIT Ion Trap Cryoelectronics A collaboration between two U.S. At the core of this achievement were Fermilab-developed cryoelectronics specialized circuits designed for the extreme cold required by quantum computers integrated into MIT Lincoln Laboratory’s ion-trap platform. Researchers tested the circuits’ ability to reliably manipulate ions, specifically moving and positioning them while minimizing electronic noise.
The team replaced some room-temperature controls with a chip mounted within the cryogenic environment, demonstrating a promising path toward more compact and efficient systems. Farah Fahim, head of Fermilab’s Microelectronics Division, noted that “By showing that low-power cryoelectronics can work inside ion-trap systems, we may be able to accelerate the timeline for scaling quantum computers, bringing closer into reach what seemed decades away.” While challenges remain—including transistor performance in extremely cold environments and extending voltage hold times—the experiment provided valuable insights for future chip designs. Robert McConnell, a technical staff member at MIT Lincoln Laboratory, stated, “while there are still significant challenges to establishing the technology needed to control ion arrays of a practical scale, this demonstration of small-form-factor, low-noise electronics lays the foundation for hybrid-integrated systems we hope to develop in the near future.” In-Vacuum Cryoelectronics Reduce Noise in Ion Qubit Control Current approaches to building scalable ion-trap quantum computers are increasingly hampered by the practical limitations of connecting room-temperature electronics to cryogenically cooled ion traps, creating a need for innovative control systems. This proof-of-principle experiment represents a significant step toward realizing larger, more stable quantum systems, moving beyond the constraints of existing architectures.
The team sought to determine if these circuits could reliably perform essential functions, including ion manipulation, precise positioning, and noise measurement. Beyond confirming functionality, the experiment yielded valuable insights for future development. Researchers discovered that certain transistors performed differently in the colder environment of MIT Lincoln Laboratory, impacting circuit performance, and initial voltage hold times required improvement to meet the demands of large-scale systems. This remarkable research integrates state-of-the-art capabilities in quantum technologies to deliver an exciting new direction for scalable ion trap quantum computing using cryoelectronic control chips.Travis Humble, director of the Quantum Science Center Hybrid System Demonstrates Ion Manipulation and Control This approach, utilizing specialized circuits designed for extreme cold, aims to reduce thermal noise and enhance the sensitivity crucial for scaling ion-trap quantum systems, addressing a major hurdle in the field. The co-integration project was jointly supported by leaders at both centers, recognizing the complementary strengths of each institution, with Sandia National Laboratories leading the effort within the Quantum Systems Accelerator. At the core of this development are Fermilab-developed cryoelectronics, which were integrated into an existing ion-trap platform at MIT Lincoln Laboratory to rigorously test their functionality. Researchers focused on reliably performing essential tasks—moving individual ions, maintaining their positions, and measuring electronic noise—to assess the viability of the new system.
Lucy Gray Shamel and Will Setzer of MIT Lincoln Laboratory employed optics and electronics with a compact application-specific integrated circuit to achieve these control functions. Beyond simply proving the concept, the experiment yielded valuable data for future iterations. while there are still significant challenges to establishing the technology needed to control ion arrays of a practical scale, this demonstration of small-form-factor, low-noise electronics lays the foundation for hybrid-integrated systems we hope to develop in the near future.Robert McConnell, a technical staff member at MIT Lincoln Laboratory Transistor Performance Varied Between Cryogenic Environments The successful integration of cryoelectronics into ion-trap quantum computing platforms, while demonstrating feasibility, revealed nuanced performance variations dependent on the specific cryogenic environment. Researchers discovered that transistors exhibiting optimal function within Fermilab’s testing apparatus did not maintain the same level of performance in the significantly colder environment at MIT Lincoln Laboratory, directly impacting the control circuit’s operational range. This discrepancy highlights the critical need for meticulous calibration and design considerations when operating at extremely low temperatures, a key challenge in scaling quantum systems. Initial circuit hold times, measured in milliseconds, were extended through modifications, but substantial improvements are still required to achieve the minutes or even hours necessary for large-scale quantum computations. These lessons will directly inform future chip designs and optimization strategies, accelerating the development timeline for more robust and reliable quantum control systems. By showing that low-power cryoelectronics can work inside ion-trap systems, we may be able to accelerate the timeline for scaling quantum computers, bringing closer into reach what seemed decades away.Farah Fahim, head of Fermilab’s Microelectronics Division Source: https://news.fnal.gov/2026/02/doe-national-quantum-research-centers-reach-milestone-breakthrough-towards-building-scalable-quantum-computers/ Tags: