Strong low-frequency quantum correlations from a four-wave-mixing amplifier

2007/03/31 by Colin McCormick, C. F. McCormick, A. M. Marino +5 · 4 citations
Computer Science · Physics and Astronomy · #Amplifier #Atomic physics #Cold Atom Physics and Bose-Einstein Condensates #Four-wave mixing #Image (mathematics) #Intensity (physics) #Laser #Materials science #Mixing (physics) #Noise (video) #Nonlinear optics #Optics #Optoelectronics #Physics #Quantum #Quantum Information and Cryptography #Quantum mechanics #Quantum noise #Quantum optics and atomic interactions #Range (aeronautics) #quant-ph

paper · pdf · doi:10.1103/physreva.78.043816

4 pages, 4 figures. Major rewrite of the previous version. New experimental results and further analysis

arxiv created 2008/03/26 · openalex publication_date 2008/10/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Using a simple scheme based on nondegenerate four-wave mixing in a hot vapor, we generate bright twin beams which display a quantum noise reduction in the intensity difference of more than 8\phantom\rule0.3em0exdB. The absence of a cavity makes the system immune to external perturbations, and strong quantum noise reduction is observed at frequencies as low as 4.5\phantom\rule0.3em0exkHz and over a large frequency range.

Citations

• Outcoupling from a Bose-Einstein condensate with squeezed light to produce entangled-atom laser beams

Cited by

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• Generating quantum correlated twin beams by four-wave mixing in hot cesium vapor