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Quantum noise reduction in optical amplification

Ou, Z. Y. and Pereira, S. F. and Kimble, H. J. (1993) Quantum noise reduction in optical amplification. Physical Review Letters, 70 (21). pp. 3239-3242. ISSN 0031-9007.

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Quantum fluctuations in optical amplification are investigated with a nondegenerate optical parametric amplifier whose internal idler mode is coupled to a squeezed vacuum. Reductions of the inherent quantum noise of the amplifier are observed with a minimum noise level 0.7 dB below the usual noise level of the amplifier with its internal idler mode in a vacuum state. With a small coherent field as the signal input, the amplified output exhibits an improvement in signal-to-noise ratio of 0.5 dB for the case of a squeezed-vacuum as compared to a vacuum state for the amplifier’s internal mode.

Item Type:Article
Additional Information:©1993 The American Physical Society Received 9 December 1992. This work was supported by the Office of Naval Research and the National Science Foundation. We gratefully acknowledge the contributions of Professor J. Yarrison-Rice made during a summer research visit.
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Deposited On:20 Sep 2007
Last Modified:18 Sep 2014 18:11

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