Acta Physica Sinica

Generation of squeezed vacuum states by PPKTP crystal and its Wigner quasi-probability distribution function reconstruction

Chenguang Ye, Jing Zhang, 山西大学光电研究所量子光学与光量子器件国家重点实验室，太原 030006

Published Jan 1, 2008• 7 citations

Abstract

We demonstrated experimentally the generation of squeezed vacuum by a periodically poled KTP crystal in a continuous-wave optical parametric oscillator，which was pumped with 532nm field. The squeezed vacuum of 3.41 dB at 1064 nm was detected by a homodyne detection system. Moreover，the Wigner quasi-probability distribution function of the squeezed vacuum was reconstructed using quantum tomography technique.

DOI: 10.7498/aps.57.6962

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