Concurrent spin squeezing and light squeezing in an atomic ensemble

• URL: http://arxiv.org/abs/2310.02493v1
• Date: Tue, 3 Oct 2023 23:47:30 GMT
• Title: Concurrent spin squeezing and light squeezing in an atomic ensemble
• Authors: Shenchao Jin, Junlei Duan, Youwei Zhang, Xichang Zhang, Han Bao, Heng Shen, Liantuan Xiao, Suotang Jia, Mingfeng Wang, and Yanhong Xiao
• Abstract summary: Experimental demonstration of concurrent spin squeezing and light squeezing in a hot atomic ensemble. Novel type of dual squeezed state may be a promising resource for quantum information science and technologies.
• Score: 1.5467049683274625
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Squeezed spin states and squeezed light are both key resources for quantum metrology and quantum information science, but have largely been separately investigated experimentally so far. Simultaneous generation of these two types of quantum states in one experiment setup is an intriguing goal, and could also enable the study of the analogies and distinctions between atoms and light from a new perspective. Here we report an experimental demonstration of concurrent spin squeezing and light squeezing in a hot atomic ensemble, by judiciously engineering a symmetric atom-light interaction Hamiltonian. The squeezing process is deterministic, yielding fixed squeezing directions for the light field and the collective atomic spin. Furthermore, the squeezed light modes lie in the multiple frequency sidebands of a single spatial mode. This novel type of dual squeezed state may be a promising resource for quantum information science and technologies. Our method can be extended to other quantum platforms such as optomechanical and cold atom systems.

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