Detuning Enhanced Cavity Spin Squeezing

Abstract

The unconditionally squeezing of the collective spin of an atomic ensemble in a laser driven optical cavity (I. D. Leroux, M. H. Schleier-Smith, and V. Vuletic, 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 $S^{-2/5}$ to $S^{-2/3}$, 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.

5 pages, 3 figures

References in corpus (8)

• Sr lattice clock at 1x10^{-16} fractional uncertainty by remote optical evaluation with a Ca clock
• Dissipative Preparation of Spin Squeezed Atomic Ensembles in a Steady State
• Spin squeezing of atomic ensembles via nuclear-electronic spin entanglement
• Spin squeezing of a cold atomic ensemble with the nuclear spin of one-half
• Quantum Control of the Hyperfine Spin of a Cs Atom Ensemble
• Coherent control of trapped ions using off-resonant lasers
• Quantum correlation in disordered spin systems: entanglement and applications to magnetic sensing
• Unconditional quantum-noise suppression via measurement-based quantum feedback

Cited by in corpus (1)

• Two-axis spin squeezing of two-component BEC via a continuous driving