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

Insider Brief

• Infleqtion has appointed Dr. Joseph Buck as senior vice president of quantum computing systems to lead development of its Sqale neutral-atom quantum computing platform.
• Buck joins Infleqtion from Lockheed Martin with more than two decades of experience in quantum, optical, and photonic systems development.
• The appointment supports Infleqtion’s efforts to scale its neutral-atom quantum systems toward larger and fault-tolerant architectures.

Press release – 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.