Abstract
We have demonstrated squeezed vacuum generation using an optical fiber, spectral filter consisting of the spatial light modulator (SLM), and a nonlinear polarization interferometer (NOPI). In the SLM filter, we can suppress the classical amplitude noise and modulate the amplitude and phase of incident pulses simultaneously. The NOPI is the easy and stable squeezed light generator. When the incident pulse is optimized using a feedback algorithm, the maximum noise reduction of -2.0 dB is observed and the corresponding magnitude of squeezing is -3.2 dB. The effects of the SLM filter such as classical amplitude noise reduction and phase optimization are confirmed.
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