Mark Saffman is the Johannes Rydberg Professor of Physics at the University of Wisconsin–Madison and Chief Scientist for Quantum Information at Infleqtion. From 2019-2026 he was the Director of the Wisconsin Quantum Institute. He is known for his work on neutral-atom quantum computing using Rydberg interactions. In 2008, he was elected a Fellow of the American Physical Society for his contributions to atomic and optical physics , and in 2014 he was named a Fellow of Optica for his contributions to neutral-atom quantum computing with Rydberg-state interactions . In 2025, he was co-awarded the 9th John Stewart Bell Prize for pioneering contributions to quantum simulation and quantum computing with neutral atoms. He is also the recipient of the 2026 Norman F. Ramsey Prize, awarded for outstanding contributions to atomic, molecular, and optical physics .