Phys. Rev. Lett. 83, 1938–1941 (1999)Noiseless Optical Amplification of ImagesSee Also: Erratum
See accompanying Physics Focus We used a spatially broadband optical parametric amplifier for image amplification. In the phase-sensitive configuration of the amplifier, we observed noiseless amplification of input images. For a gain of ≃2.5, we measured noise-figure values of ( 0.2±0.6) and ( 0.4±0.5) dB, respectively, for two amplifiers of different lengths. These experimental values agree with theory (for an ideal noiseless amplifier the noise figure is 0 dB) and are almost 2 dB lower than the quantum limit of an ideal phase-insensitive amplifier. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.83.1938
DOI:
10.1103/PhysRevLett.83.1938
PACS:
42.50.Lc, 03.67.Hk, 42.50.Dv, 42.65.Ky
See AlsoErratum: Sang-Kyung Choi, Michael Vasilyev, and Prem Kumar, Erratum: Noiseless Optical Amplification of Images [Phys. Rev. Lett. 83, 1938 (1999)], Phys. Rev. Lett. 84, 1361 (2000). |
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