2017/10/17 by Rong Ma, Wei Liu, Zhongzhong Qin +2
Computer Science · Physics and Astronomy · #Atomic physics #Caesium #Cold Atom Physics and Bose-Einstein Condensates #Four-wave mixing #Intensity (physics) #Lambda #Laser #Materials science #Mixing (physics) #Nonlinear optics #Optics #Phase (matter) #Physics #Quantum #Quantum Information and Cryptography #Quantum mechanics #Quantum optics and atomic interactions #Range (aeronautics) #quant-ph
paper · pdf · doi:10.1103/physreva.96.043843
published as Phys. Rev. A 96, 043843 (2017) · 6 pages, 5 figures, comments are welcome
openalex publication_date 2017/10/17 · arxiv created 2017/10/18 · arxiv updated 2017/10/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Using a nondegenerate four-wave mixing process based on a double-\mathrm\ensuremathΛ scheme in hot cesium vapor, we generate quantum correlated twin beams with a maximum intensity-difference squeezing of 6.5 dB. The substantially improved squeezing can be mainly attributed to very good frequency and phase-difference stability between the pump and probe beams in our experiment. Intensity-difference squeezing can be observed within a wide experimental parameter range, which guarantees its robust generation. Since this scheme produces multi-spatial-mode twin beams at the Cs D1 line, it is of interest for experiments involving quantum imaging and coherent interfaces between atomic and solid-state systems.