TY - JOUR
T1 - Noiseless optical amplification of images
AU - Choi, Sang Kyung
AU - Vasilyev, Michael
AU - Kumar, Prem
PY - 1999
Y1 - 1999
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevLett.83.1938
DO - 10.1103/PhysRevLett.83.1938
M3 - Article
AN - SCOPUS:0042002035
SN - 0031-9007
VL - 83
SP - 1938
EP - 1941
JO - Physical review letters
JF - Physical review letters
IS - 10
ER -