2018/06/01 by Wei Qin, Ye‐Hong Chen, Ye-Hong Chen +3
Computer Science · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Floquet theory #Optical cavity #Photon #Quantum Information and Cryptography #Resonance (particle physics) #Resonator #Scattering #Spin (aerodynamics) #Strong Light-Matter Interactions #quant-ph
paper · pdf · doi:10.1515/nanoph-2020-0513
published as Nanophotonics 9, 4853-4868 (2020) · accepted in Nanophotonics
openalex publication_date 2018/06/01 · openalex created_date 2019/12/13 · arxiv created 2020/09/11 · arxiv updated 2021/07/07 · openalex updated_date 2026/08/06
Abstract We propose a simple method for generating spin squeezing of atomic ensembles in a Floquet cavity subject to a weak, detuned two‐photon driving. We demonstrate that the weak squeezing of light inside the cavity can, counterintuitively, induce strong spin squeezing . This is achieved by exploiting the anti‐Stokes scattering process of a photon pair interacting with an atom. Specifically, one photon of the photon pair is scattered into the cavity resonance by absorbing partially the energy of the other photon whose remaining energy excites the atom . The scattering, combined with a Floquet sideband, provides an alternative mechanism to implement Heisenberg‐limited spin squeezing. Our proposal does not need multiple classical and cavity‐photon drivings applied to atoms in ensembles, and therefore its experimental feasibility is greatly improved compared to other cavity‐based schemes. As an example, we demonstrate a possible implementation with a superconducting resonator coupled to a nitrogen‐vacancy electronic‐spin ensemble.