Infleqtion Appoints Dr. Joseph Buck as Senior Vice President of Quantum Computing Systems

Lockheed Martin senior fellow and Caltech neutral-atom physicist to lead Sqale development

LOUISVILLE, Colo.--(BUSINESS WIRE)--Infleqtion (NYSE: INFQ), a quantum computing and quantum sensing company powered by neutral-atom technology, today announced the appointment of Dr. Joseph Buck as senior vice president of quantum computing systems. Dr. Buck joined the company July 27, 2026, and will lead development of Sqale, Infleqtion's scalable neutral-atom quantum computer.

Dr. Buck joined Infleqtion from Lockheed Martin, where he served as senior fellow at the Advanced Technology Center. He has spent 23 years building quantum, optical, and photonic systems for government, defense, and commercial customers, work that began with his Ph.D. in physics from the California Institute of Technology, where his doctoral research trapped single neutral atoms inside high-finesse optical cavities, the physics that underpins neutral-atom quantum computing today. He has authored more than 60 technical publications, holds an extensive patent portfolio, and has carried technologies from research into fielded products, including commercialized polarization gratings and advanced optics manufacturing methods.

"The era of proving quantum science is over. Now we build," said Matthew Kinsella, Chief Executive Officer of Infleqtion. "Joe has worked on neutral atoms since his doctorate, and he has spent his career delivering systems for customers who do not accept excuses. We expect he will take Sqale from the neutral-atom systems we field today to utility-scale, fault-tolerant quantum computers."

"Most quantum programs are still waiting on the physics. Infleqtion is past that," said Dr. Joseph Buck, Senior Vice President of Quantum Computing Systems at Infleqtion. "I have spent decades building systems that either hold up in the field or do not ship. The architecture works. My job is to build it at scale."

A Record of Delivery

Infleqtion has already put neutral-atom systems in customers' hands. The company delivered the United Kingdom's only operational 100-physical-qubit quantum computing system to the National Quantum Computing Centre and has systems deployed in Japan. Its fault-tolerant, neutral-atom quantum computer is planned for delivery to the Illinois Quantum & Microelectronics Park in 2027. We anticipate Dr. Buck will convert that record into utility-scale systems.

About Infleqtion

Infleqtion, Inc. (NYSE: INFQ) is a global leader in quantum technology, delivering neutral-atom solutions for quantum computing, networking, sensing, and security. With a product portfolio spanning quantum computers, quantum optical clocks, RF receivers, and inertial sensors, Infleqtion’s full-stack approach combines high-performance hardware with the company’s proprietary Superstaq quantum computing software platform. Infleqtion’s systems are already in use by the U.S. Department of War, NASA, the U.K. government, and in multiple collaborations with NVIDIA. Infleqtion, in collaboration with NVIDIA, published the world’s first demonstration of a materials science application using logical qubits. With operations in the U.S., Europe, and Asia, Infleqtion meets the demands of government and commercial customers across the space, defense, energy, finance and telecommunications sectors. For more information, visit Infleqtion.com or follow Infleqtion on LinkedIn, YouTube, and X.

Forward looking statements:

This press release contains forward-looking statements within the meaning of federal securities laws, including the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995. These statements may be identified by words such as "anticipates," "believes," "estimates," "expects," "intends," "plans," "projects," "seeks," "will," and variations of these words or similar expressions that are intended to identify forward-looking statements. All statements other than statements of historical fact — including statements regarding the expectation that Dr. Buck will progress Sqale from neutral-atom systems to utility-scale, fault-tolerant quantum computers — are forward-looking statements. These statements are based on Infleqtion's current expectations, assumptions and projections as of the date of this release and are subject to risks and uncertainties that could cause actual results to differ materially and adversely. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. Such risks and uncertainties include, without limitation, those related to Infleqtion's ability to recognize anticipated benefits of its business combination with Churchill Capital Corp X; the implementation, market acceptance, and success of Infleqtion's business model, growth strategy, and opportunities, and its ability to commercialize its quantum computing and quantum sensing technology; the expected benefits of and ability to maintain and enter into new contracts, awards, and other relationships, partnerships, or collaborations with governments, government entities, universities, or commercial partners; the ability to develop and deploy neutral-atom quantum computing products on anticipated timelines and at anticipated performance levels; the ability to achieve fault-tolerant and utility-scale quantum computing, including anticipated improvements in entangling gate fidelity; the ability of Superstaq to achieve commercial and research adoption; the potential for quantum computing technology to achieve quantum advantage; the ability of Infleqtion’s products to meet government counterparties’ and customers’ technical requirements and compliance and regulatory needs; Infleqtion’s ability to obtain and maintain intellectual property protection and not infringe on the rights of others; and other risks and uncertainties described in Infleqtion's filings with the U.S. Securities and Exchange Commission. The Company undertakes no obligation to update these forward-looking statements except as required by law.