Detuning-enhanced cavity spin squeezing

2014/07/28 by Yan-Lei Zhang, Yan‐Lei Zhang, Chang‐Ling Zou +6
Computer Science · Physics and Astronomy · #Atomic and Subatomic Physics Research #Physics #Quantum Information and Cryptography #Quantum electrodynamics #Quantum mechanics #Quantum optics and atomic interactions #Spin (aerodynamics) #Thermodynamics #quant-ph

paper · pdf · doi:10.1103/physreva.91.033625

5 pages, 3 figures

arxiv created 2014/07/28 · openalex publication_date 2015/03/23 · arxiv updated 2015/06/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

The unconditional squeezing of the collective spins of an atomic ensemble in a laser driven optical cavity [I. D. Leroux, M. H. Schleier-Smith, and V. Vuleti\ifmmode \acutec\else 'c\fi, Phys. Rev. Lett 104, 073602 (2010)] is studied and analyzed theoretically. Surprisingly, we find that the largely detuned driving laser can improve the scaling of cavity squeezing from S^\ensuremath-2/5 to S^\ensuremath-2/3, where S is the total atomic spin. Moreover, we also demonstrate that the experimental imperfection of photon scattering into free space can be efficiently suppressed by detuning.

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