ÃÛÌÒ´«Ã½Æƽâ°æÏÂÔØ

In multiple areas of atomic, molecular, and optical physics, the thermal temperature of the blackbody environment can have important ramifications for performance and physical observations. In optical atomic clocks, thermal photons can cause uncontrolled shifts of the clock transition, compromising accuracy and long-term stability. In studies of ultracold molecules, for many-body physics and quantum computing, blackbody photons can induce decay out of the computational space. And, in Rydberg-mediated two-qubit gates, Ìýa fundamental limit of gate fidelity comes from the finite-lifetime of the Rydberg state, which exhibits a significant contribution from blackbody-induced decay. Therefore, producing a cryogenic apparatus with high-optical access, compatible with these many directions, would have significant impact. At the same time, the inclusion of cryogenic pumping drastically improves the background vacuum pressure and therefore trapping lifetime, which can also significantly improve performance in these scientific endeavors described above. In this work, we are targeting exactly such a system, which we first reported .Ìý