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arXiv · 1003.2460

Experimental generation of 6 dB continuous variable entanglement from a nondegenerate optical parametric amplifier

Yu Wang·Heng Shen·Xiaoli Jin·Xiaolong Su·Changde Xie·Kunchi Peng
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Abstract

We experimentally demonstrated that the quantum correlations of amplitude and phase quadratures between signal and idler beams produced from a non-degenerate optical parametric amplifier (NOPA) can be significantly improved by using a mode cleaner in the pump field and reducing the phase fluctuations in phase locking systems. Based on the two technical improvements the quantum entanglement measured with a two-mode homodyne detector is enhanced from ~ 4 dB to ~ 6 dB below the quantum noise limit using the same NOPA and nonlinear crystal.

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Yu Wang, Heng Shen, Xiaoli Jin, Xiaolong Su, Changde Xie, Kunchi Peng. 2010-03-12. Experimental generation of 6 dB continuous variable entanglement from a nondegenerate optical parametric amplifier. https://doi.org/10.1364/oe.18.006149

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