Observation of amplitude squeezing from semiconductor lasers by balanced direct detectors with a delay line.
Simultaneous measurement of the signal-noise level and the corresponding shot-noise level using balanced direct detectors with a delay line is demonstrated. We have observed 1.3-dB squeezing from a constant-current-driven semiconductor laser, which is consistent with 3-dB squeezed noise at the output of the laser when the detection efficiency is taken into account.
Machida
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S
Yamamoto
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Y