Published May 24, 1993
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Journal Article
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Quantum noise reduction in optical amplification
- Creators
- Ou, Z. Y.
- Pereira, S. F.
- Kimble, H. J.
Chicago
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Abstract
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.
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.Files
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- Eprint ID
- 8832
- Resolver ID
- CaltechAUTHORS:OUZprl93
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