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Multimode optical parametric amplification in the phase-sensitive regime
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DOI：10.1364/OL.422876.png)
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Phase-sensitive optical parametric amplification of squeezed states helps to overcome detection loss and noise and thus increases the robustness of sub-shot-noise sensing. Because such techniques, e.g., imaging and spectroscopy, operate with multimode light, multimode amplification is required. Here we find the optimal methods for multimode phase-sensitive amplification and verify them in an experiment where a pumped second-order nonlinear crystal is seeded with a Gaussian coherent beam. Phase-sensitive amplification is obtained by tightly focusing the seed into the crystal, rather than seeding with close-to-plane waves. This suggests that phase-sensitive amplification of subshot-noise images should be performed in the near field. A similar recipe can be formulated for the time and frequency, which makes this work relevant for quantum-enhanced spectroscopy. (C) 2021 Optical Society of America
Keyword:
QUANTUM-NOISE
REDUCTION
GAIN
期刊
IF:
3.3
论文数:
4.0W
被引数:
7.6W
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引用论文
分享收藏分享收藏Entangled-Pair Transmission Improvement Using Distributed Phase-Sensitive Amplification.png)
PHYSICAL REVIEW X
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PHYSICAL REVIEW XIF15.7
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