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

By C. Mccormick, A. Marino, V. Boyer, P. Lett. 2007

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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 $8\phantom{\rule{0.3em}{0ex}}\mathrm{dB}$. The absence of a cavity makes the system immune to external perturbations, and strong quantum noise reduction is observed at frequencies as low as $4.5\phantom{\rule{0.3em}{0ex}}\mathrm{kHz}$ and over a large frequency range.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/1f572e48e479c125b459373e5ecc29cefeb2ae18