Lawrence Livermore National Laboratory Strengthens Quantum Computing Collaboration Through SQMS Materials and Cavity Research
Lawrence Livermore National Laboratory Strengthens Quantum Computing Collaboration Through SQMS Materials and Cavity Research
Synopsis- The Department of Energy has renewed funding for the SQMS Center to accelerate quantum information science breakthroughs.
- Lawrence Livermore National Laboratory is contributing advanced materials expertise, particularly in niobium and tantalum superconducting systems.
- Research into quantum cavities and photon stability could enhance computing performance while advancing dark matter detection and sensing technologies.
The Department of Energy Office of Science has renewed the Superconducting Quantum Materials and Systems Center (SQMS), committing $125 million over five years to accelerate progress in quantum information science, according to a report published by Newswise and Lawrence Livermore National Laboratory.
Hosted by Fermi National Accelerator Laboratory, SQMS brings together more than 300 specialists across 43 partner organizations spanning national laboratories, universities and industry. The collaboration is focused on advancing foundational capabilities across quantum computing, communication and sensing systems. Lawrence Livermore National Laboratory (LLNL) is among the participating institutions, contributing its extensive experience in advanced materials and microwave cavity systems.
As part of its contribution, LLNL scientist Keith Ray is investigating superconducting materials including niobium and tantalum, which are critical components in constructing three-dimensional cavities and two-dimensional resonators used in superconducting qubits. These structures play a central role in enabling quantum computation by allowing photons to act as carriers of information.
“Regardless of the institution you’re at or the qubit design you’re working on, you want more information about the materials that you’re employing,” Ray said, as cited in the Newswise announcement. “It’s great to see a bunch of experimental and theoretical work coming out of SQMS that’s focused on materials for quantum computers. The more data I have on these materials, the more refined my models can be, and the more informative and relevant they can be.”
Superconducting qubits built with niobium cavities function by trapping individual photons inside a hollow resonant chamber. These photons oscillate at precise frequencies, enabling them to represent quantum information. To preserve this information effectively, photons must bounce within the cavity with minimal energy loss, requiring surfaces free of microscopic defects or material imperfections.
Ray noted that LLNL has developed specialized analytical methods to study these superconducting interfaces and identify sources of performance loss. “We’ve developed methods to look at these interfaces and what causes loss in superconducting qubits,” he said. “A lot of effort has been undertaken on other projects here at Livermore to develop those methods, and we can now apply them to interfaces and materials that are useful for SQMS and potentially leverage our work to do very targeted things for the collaboration.”
The SQMS initiative is focused heavily on cavity-based quantum platforms, where precise cavity engineering is essential for performance. LLNL scientist Gianpaolo Carosi, who is involved in cavity design efforts within SQMS, highlighted the remarkable performance already achieved. One cavity system developed within the collaboration was able to sustain a photon inside the structure for several seconds.
“My role with SQMS is to help with the cavity design,” Carosi explained in the Newswise report. “So far, one of their cavities was able to get a photon to exist in that cavity for on the order of a few seconds. It’s kind of crazy, a little trapped photon bouncing around for actual seconds.”
Extending the duration that photons remain stable within these cavities is critical to improving quantum computing accuracy. Longer photon lifetimes enable extended computation periods while reducing error rates, which remain one of the primary barriers to scaling quantum computing systems.
Beyond computing applications, this research is also directly connected to fundamental physics and sensing technologies. LLNL’s work on the Axion Dark Matter eXperiment (ADMX), which uses similar cavity architectures, is helping scientists search for axions, a theoretical particle candidate for dark matter. These cavity systems could also enable the detection of dark photons and gravitational waves by observing subtle shifts in resonant frequencies caused by physical distortions of the cavity structure.
Carosi emphasized the broader implications of this sensing capability, particularly in areas beyond basic research. “I am really curious to see how the designs they have for gravitational wave sensing could be used for other types of sensing that may be applicable to national security,” he said. “I think SQMS has the ability to bring an interesting set of resources together to try and tackle things at a pretty large scale.”
Both Ray and Carosi pointed to the growing potential for deeper integration between LLNL’s existing research programs and the SQMS initiative. The collaboration allows institutions to share data, simulation methods and experimental insights, accelerating progress toward more reliable quantum technologies.
“We can all share ideas to develop better models and simulations to describe these materials and cavities,” Ray said. “All of this adds up to better quantum computers in the long run.”
The renewed SQMS investment underscores the Department of Energy’s long-term strategy to strengthen the scientific and engineering foundations required for practical quantum systems. Through coordinated efforts across national laboratories, academic institutions and industry, the program aims to overcome critical technical barriers and unlock new capabilities in computing, sensing and communication.
Source: Newswise — Have a Story? Address it to the Editor and submit it here
About Lawrence Livermore National Laboratory
Lawrence Livermore National Laboratory (LLNL) is a United States Department of Energy national laboratory dedicated to advancing science and technology to strengthen national security and address critical global challenges. Founded in 1952, LLNL conducts research across a wide range of disciplines, including quantum science, materials engineering, supercomputing, energy systems, and national defense technologies. The laboratory is recognized globally for its expertise in high-performance computing, advanced materials research, and experimental physics. LLNL has played a key role in major scientific initiatives, including nuclear deterrence stewardship, fusion energy research, and dark matter detection experiments such as the Axion Dark Matter eXperiment (ADMX). Its multidisciplinary teams collaborate with universities, industry partners, and government agencies worldwide. By developing advanced simulation tools, materials science innovations, and quantum technologies, LLNL continues to contribute to breakthroughs that shape the future of computing, sensing, and national security infrastructure.
Featured image Source: Newswise
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