Repeated Ancilla Reuse for Logical Computation on a Neutral Atom Quantum Computer

Improving the Quality, Reliability, and Robustness of Logical Qubits

At the end of 2024, Atom Computing and Microsoft demonstrated the entanglement of large numbers of logical qubits in Atom’s flagship systems, and used them for running algorithms. Since then, the team at Atom has been improving the quality, reliability, and robustness of these logical qubits.

Today, researchers at Atom Computing demonstrated new error correction capabilities which enable high-depth logical circuits on Atom’s neutral-atom quantum processors. Leveraging these capabilities, the team also demonstrated improved system reliability with deterministic creation of logical qubit quantum states (logical Bell pairs) and increased system robustness by replacing qubits that are lost mid-circuit without disrupting the rest of the running algorithm, thereby enabling the platform to run circuits indefinitely.

The key enablers of this progress are an upgraded implementation of Atom’s unique mid-circuit measurement technique (the ability to read out a subset of the qubits in the platform without disturbing all other qubits) with immediate qubit reset and reuse, and the integration of real-time conditional branching (the ability of the system’s software stack to decide what its next operation should be, based on the mid-circuit measurement results).  

Atom Computing continues to execute on its roadmap towards fault-tolerant quantum computing, both through advanced research projects and participation in the DARPA QBI program. This progress shows that Atom Computing’s neutral atom technology is not only scalable in the number of logical qubits, but also in their performance. Improvements along both vectors is crucial for being able to build and deliver platforms that can solve large computational problems that enable scientific and economic value beyond classical computing.

Dr. Ben Bloom, Founder and Chief Executive Officer of Atom Computing, said “These demonstrations of our technology continue to prove that Atom is a leading contender to win the race to fault-tolerant quantum computing. With our scalable logical qubits, both in numbers and in quality, we are looking forward to enabling our customers to fully leverage this technology for their researchers and ecosystems.”

The work was supported by researchers from the Microsoft Quantum team.

Quantum computing could change science forever - if it works

Atom Computing selected by DARPA to explore near-term utility-scale quantum computing with neutral atoms

April 3, 2025 – Berkeley, CA – Atom Computing has been selected by the Defense Advanced Research Projects Agency (DARPA) to explore how Atom’s highly-scalable neutral atom technology will realize utility-scale quantum computing in the near term.

The Quantum Benchmarking Initiative (QBI), an expansion of the existing Underexplored Systems for Utility-Scale Quantum Computing (US2QC) program, aims to determine the possibility of building an industrially useful quantum computer much faster than conventional predictions.

Atom Computing has been selected for Stage A of the QBI program, which focuses on the conceptual description of a utility-scale quantum computer that has a plausible path to realization in the near term. As part of the program, Microsoft has agreed to also provide algorithmic support and error correction codes to Atom Computing.

To realize a utility-scale quantum computer, Atom Computing leverages the scalability and flexibility of its technology, as well as multiple critical platform capabilities such as high-fidelity gate operations, all-to-all qubit connectivity, 1,000+ physical qubits, long coherence times, and mid-circuit measurement with qubit reset and reuse. These capabilities enabled the recent joint demonstration with Microsoft of the entanglement of 24 logical qubits, and error detection, correction, and computation with 28 logical qubits.

“Pushing the state-of-the-art of quantum computing to utility scale is an exciting challenge, and it is an incredible honor to be selected to participate in DARPA’s QBI program”, said Dr. Ben Bloom, Founder and CEO of Atom Computing. “We are confident that Atom Computing’s technology and roadmap are on track with DARPA’s timeline for achieving utility-scale quantum computing.”

About Atom Computing

Atom Computing is developing large-scale quantum computers to enable companies and researchers to achieve unprecedented computational breakthroughs. Utilizing highly scalable arrays of optically trapped neutral atoms, the company has developed systems with over 1,000 qubits, featuring advanced capabilities towards fault-tolerant quantum computing. Atom Computing’s on-premises systems provide customers with new computational tools to address increasingly complex applications and to grow their quantum ecosystem. Learn more at atom-computing.com and follow us on LinkedIn.

Atom Computing Recognized by Fast Company as One of the World’s Most Innovative Companies of 2025

MARCH 18, 2025 - Boulder, CO – Atom Computing announced today that it has been named to Fast Company’s renowned list of the World’s Most Innovative Companies of 2025.

This year’s list shines a spotlight on businesses that are shaping industry and culture through their innovations to set new standards and achieve remarkable milestones in all sectors of the economy. Alongside the World’s 50 Most Innovative Companies, Fast Company recognizes 609 organizations across 58 sectors and regions.

Atom Computing is being recognized as #10 in the Computing category for its pioneering work in neutral atom quantum computing.

“It’s an honor to be recognized by Fast Company for our innovation and progress in developing cutting-edge quantum computing technology,” said Ben Bloom, PhD, Founder & CEO of Atom Computing. “We’re excited to enable researchers with new computational tools to explore breakthrough applications in chemistry, materials science, and beyond.”

To unleash the power of quantum computing, it is critical to develop new generations of systems that correct errors by using many physical qubits to produce “logical qubits.” These logical qubits can then run intricate quantum programs that address some of today’s most complex computational problems.

In 2024, Atom Computing became the first quantum company to surpass 1,200 physical qubits and demonstrated all the key ingredients required for error-corrected, logical qubit operation in its commercially available flagship quantum systems. Building on these achievements, Atom Computing went on to entangle a record-setting 24 logical qubits and executed an algorithm with 28 logical qubits in collaboration with Microsoft—groundbreaking steps toward harnessing quantum computing’s full capabilities.

Atom Computing also announced that it would make its systems available for on-premises deployment as part of a joint commercial offering with Microsoft, helping expand access to quantum technology and fostering a diverse and robust quantum ecosystem.

The World’s Most Innovative Companies stands as Fast Company’s hallmark franchise and one of its most anticipated editorial efforts of the year. To determine honorees, Fast Company’s editors and writers review companies driving progress around the world and across industries, evaluating thousands of submissions through a competitive application process. The result is a globe-spanning guide to innovation today, from early-stage startups to some of the most valuable companies in the world.

“Our list of the Most Innovative Companies offers both a comprehensive look at innovation today and a playbook for the future,” said Fast Company editor-in-chief Brendan Vaughan. “This year, we recognize companies that are harnessing AI in deep and meaningful ways, brands that are turning customers into superfans by overdelivering for them, and challengers that are introducing bold ideas and vital competition to their industries. At a time when the world is rapidly shifting, these companies are charting the way forward.”

About Atom Computing
Atom Computing is developing large-scale quantum computers to enable companies and researchers to achieve unprecedented computational breakthroughs. Utilizing highly scalable arrays of optically trapped neutral atoms, the company has developed systems with over 1,000 qubits, featuring advanced capabilities towards fault-tolerant quantum computing. Atom Computing’s on-premises systems provide customers with new computational tools to address increasingly complex applications and to grow their quantum ecosystem.

About Fast Company
Fast Company is the only media brand fully dedicated to the vital intersection of business, innovation, and design, engaging the most influential leaders, companies, and thinkers on the future of business. Headquartered in New York City, Fast Company is published by Mansueto Ventures LLC, along with fellow business publication Inc. For more information, please visit fastcompany.com.

Atom Computing, Microsoft Roll Out On-Premise System Supporting 50 Logical Qubits

Logical Computation Demonstrated with a Neutral Atom Quantum Processor

High-Fidelity Universal Gates in the Yb-171 Ground State Nuclear Spin Qubit

Demonstrating high-fidelity gates and the world’s largest entangled logical qubit state in Atom Computing’s flagship systems

In September Microsoft announced their collaboration with Atom Computing to build the world’s most powerful quantum machine, and create a unique commercial offering which is available for order today.

Just two months after this announcement we are excited to share the news that together we have now entangled 24 logical qubits, setting a new world record. We also jointly demonstrated error detection, correction, and computation with 28 logical qubits on Atom’s flagship systems. More information on this work can be found in the Azure Quantum technical blog.

At the same time, Atom Computing is announcing the demonstration of the highest two-qubit gate fidelity in a commercial neutral atom system. This is another important milestone in the company’s race to build fault-tolerant quantum computers, achieving state-of-the-art single-qubit and two-qubit gate fidelities in Atom’s second-generation systems.

In a preprint article on arXiv, the Atom team reported the measured performance of qubits contained in an optical tweezer array, with a 99.963(2)% single-qubit gate fidelity, and a 99.56(5)% two-qubit gate fidelity, demonstrating the best neutral-atom two-qubit gate fidelity in a commercial system (update: the article has since been published in Physical Review X Quantum).

Dr. Ben Bloom, Founder and Chief Executive Officer, said “We are excited to show how our highly scalable neutral atom technology can be used to create large numbers of high-fidelity qubits that are a crucial part of Atom’s strategy to building fault tolerant quantum computers.”

Fault tolerant quantum computing is essential for being able to solve large computational problems that enable scientific and economic value beyond classical computing, and it requires the integration of multiple advanced technologies and quantum error correction algorithms to provide sufficient reliable computing resources in a sustainable way.

With these results, Atom Computing’s second-generation systems have now demonstrated all of the key ingredients necessary for supporting quantum error correction, including large numbers of high-fidelity physical qubits which have all-to-all connectivity, long coherence times, and mid-circuit measurement with qubit reset and reuse.

Atom Computing will continue to energetically drive their technical roadmap and, together with Microsoft, demonstrate significant milestones towards achieving scientific and commercial advantage faster than previously thought possible.

For more information, see Atom Computing's technical paper, our joint technical paper, Microsoft's Azure Quantum technical blog, and sign up for the Quantum Insider Webinar - featuring both Microsoft and Atom Computing - on January 16, 2025 to learn more about our collaboration.

Collaboration on Rydberg Interactions