Abstract

The pulsed squeezed state of light is expected to enhance the sensitivity of optical measurements using optical pulses. To achieve a high squeezing level, it is crucial to explore its limiting factors. In this study, we analyze the pulsed squeezed vacuum detected with picosecond pulses to explore two critical factors that limit the achievable squeezing level. First, we investigate the effect of the frequency chirp of local oscillator (LO) pulses and show that there exists an upper bound of the chirp parameter for a given squeezing level. Next, we analyze the effect of temporal matching between the LO pulse and the squeezed vacuum and point out the importance of temporal broadening in nonlinear optical crystals for squeezing.

© 2020 Optical Society of America

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