Cooling neutral atoms into maximal entanglement in the Rydberg blockade regime

We propose a cooling scheme to prepare stationary entanglement of neutral atoms in the Rydberg blockade regime by the combination of periodically collective laser pumping and dissipation. In each cycle, the controlled unitary dynamics process can selectively pump atoms away from the nontarget state while keeping the target state unchanged. The subsequent dissipative process redistributes the populations of ground states through the engineered spontaneous emission. After a number of cycles, the system will eventually be stabilized into the desired steady state, independent of the initial state. This protocol does not rely on coherent addressing of individual neutral atoms or fine control of Rydberg interaction intensity, which can, in principle, greatly improve the feasibility of experiments in related fields. (C) 2022 Optica Publishing Group

Automated summary

We propose a cooling scheme to prepare stationary entanglement of neutral atoms in the Rydberg blockade regime by the combination of periodically collective laser pumping and dissipation. This protocol aims to stabilize the system into the desired steady state independently of the initial state, without requiring coherent addressing of individual neutral atoms or fine control of Rydberg interaction intensity, thus improving the feasibility of experiments in related fields.