2003/04/05 by Hiroki Saito, Masahito Ueda
Computer Science · Physics and Astronomy · #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum optics and atomic interactions #cond-mat #quant-ph
paper · pdf · doi:10.1103/physreva.68.043820
published as Phys. Rev. A 68, 043820 (2003) · 9 pages, 5 figures
arxiv created 2003/04/05 · openalex publication_date 2003/10/20 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Spin squeezing of an ensemble of N atoms in a high-Q cavity is enhanced by continuous measurement of photons in the cavity. A degree of spin squeezing proportional to N^\ensuremath-1/3 is achieved as a quasi-steady-state over a broad set of initial states of atoms and photons. Our method of spin squeezing is robust against the imperfect photodetection efficiency in current experiments.