Concurrent Spin Squeezing and Light Squeezing in an Atomic Ensemble

Squeezed spin states and squeezed light are both key resources for quantum metrology and quantum information science, but have been separately investigated in experiments so far. Simultaneous generation of these two types of quantum states in one experiment setup is intriguing but remains a challenging goal. Here, we propose a novel protocol based on judiciously engineered symmetric atom-light interaction, and report proof-of-principle experimental results of concurrent spin squeezing of 0.61±0.09 dB and light squeezing of 0.65_{-0.10}^{+0.11} dB in a hot atomic ensemble. The squeezing process is deterministic, yielding fixed squeezing directions for both 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 new type of dual squeezed state is applicable for quantum enhanced metrology and quantum networks. Our method can be extended to other quantum platforms such as optomechanics, cold atoms, and trapped ions.

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Publication Details

Journal
Physical Review Letters
Published
2024-10-24
DOI
https://doi.org/10.1103/physrevlett.133.173604
Citations
5
Primary Topic
Quantum optics and atomic interactions
Type
article
Field-Weighted Citation Impact
1.69

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article

Concurrent Spin Squeezing and Light Squeezing in an Atomic Ensemble

Shenchao Jin, Han Bao, Mingfeng Wang, Heng Shen et al.
5 citations
Physical Review Letters
Quantum optics and atomic interactions
1.69
article

Concurrent Spin Squeezing and Light Squeezing in an Atomic Ensemble

Shenchao Jin, Han Bao, Mingfeng Wang, Heng Shen, Junlei Duan, Xichang Zhang, Liantuan Xiao, Youwei Zhang, Suotang Jia, Yanhong Xiao
article en
5 citations

Abstract

Squeezed spin states and squeezed light are both key resources for quantum metrology and quantum information science, but have been separately investigated in experiments so far. Simultaneous generation of these two types of quantum states in one experiment setup is intriguing but remains a challenging goal. Here, we propose a novel protocol based on judiciously engineered symmetric atom-light interaction, and report proof-of-principle experimental results of concurrent spin squeezing of 0.61±0.09 dB and light squeezing of 0.65_{-0.10}^{+0.11} dB in a hot atomic ensemble. The squeezing process is deterministic, yielding fixed squeezing directions for both 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 new type of dual squeezed state is applicable for quantum enhanced metrology and quantum networks. Our method can be extended to other quantum platforms such as optomechanics, cold atoms, and trapped ions.

Physical Review LettersVol. 133(17)
Wenzhou University (CN), Shanxi University (CN), Johannes Gutenberg University Mainz (DE), Fudan University (CN), Shanxi University of Traditional Chinese Medicine (CN), State Key Laboratory of Surface Physics
National Natural Science Foundation of China, Fund for Shanxi Key Subjects Construction, National Key Research and Development Program of China
Openalex Percentile: Top 16%
Quantum optics and atomic interactions
1.69
DOISourceOpenAlex
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