Simultaneous experimental generation of vacuum squeezing and bright amplitude squeezing from a frequency doubler.
Both vacuum-squeezed and bright amplitude-squeezed states of light are experimentally generated from a frequency doubler with a semimonolithic Fabry-Perot configuration consisting of a type II nonlinear crystal and a concave mirror. Vacuum squeezing of 3.2 +/- 0.1 dB and amplitude squeezing of 1.3 +/- 0.2 dB are obtained simultaneously at a pump power of 8 mW. The two quadrature-squeezed optical fields that are generated are of identical frequency at 1080-nm wavelength and orthogonal polarization. Optimizing the input pump power by 19 mW yields as much as 5.0 +/- 0.2 dB of maximum vacuum squeezing. The advantages of the system are its simplicity and multiple utility.
Luo
Yu
Y
State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics of Shanxi University, Taiyuan 030006, China.
Li
Ying
Y
Xie
Changde
C
Pan
Qing
Q
Peng
Kunchi
K