Superradiance-induced multistability in driven Rydberg lattice gases
- URL: http://arxiv.org/abs/2209.10366v2
- Date: Fri, 6 Jan 2023 02:58:10 GMT
- Title: Superradiance-induced multistability in driven Rydberg lattice gases
- Authors: Yunhui He, Zhengyang Bai, Yuechun Jiao, Jianming Zhao, and Weibin Li
- Abstract summary: We study steady state phases of a one-dimensional array of Rydberg atoms coupled by a microwave (MW) field.
We examine the interplay among the MW coupling, intra-state van der Waals (vdW) interaction, and single-body and collective dissipation.
- Score: 1.2233362977312945
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We study steady state phases of a one-dimensional array of Rydberg atoms
coupled by a microwave (MW) field where the higher energy Rydberg state decays
to the lower energy one via single-body and collective (superradiant) decay.
Using mean-field approaches, we examine the interplay among the MW coupling,
intra-state van der Waals (vdW) interaction, and single-body and collective
dissipation between Rydberg states. A linear stability analysis reveals that a
series of phases, including uniform, antiferromagnetic, oscillatory, and
bistable and multistable phases can be obtained. Without the vdW interaction,
only uniform phases are found. In the presence of the vdW interaction,
multistable solutions are enhanced when increasing the strength of the
superradiant decay rate. Our numerical simulations show that the bistable and
multistable phases are stabilized by superradiance in a long chain. The
critical point between the uniform and multistable phases and its scaling with
the atom number is obtained. Through numerically solving the master equation of
a finite chain, we show that the mean-field multistable phase could be
characterized by expectation values of Rydberg populations and two-body
correlations between Rydberg atoms in different sites.
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