https://doi.org/10.1051/epjap/2017170113
Regular Article
Enhancement of quantum-enhanced LADAR receiver in nonideal phase-sensitive amplification
1
State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, P.R. China
2
University of Chinese Academy of Sciences, Beijing 100084, P.R. China
3
Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, P.R. China
a e-mail: liuhongjun@opt.ac.cn
Received:
30
March
2017
Revised:
17
May
2017
Accepted:
31
May
2017
Published online: 10 July 2017
The phase-sensitive amplification (PSA) with an injected squeezed vacuum field is theoretically investigated in quantum-enhanced laser detection and ranging (LADAR) receiver. The theoretical model of the amplified process is derived to investigate the quantum fluctuations in detail. A new method of mitigating the unflat gain of nonideal PSA is proposed by adjusting the squeezed angle of the squeezed vacuum field. The simulation results indicate that signal-noise ratio (SNR) of system can be efficiently improved and close to the ideal case by this method. This research will provide an important potential in the applications of quantum-enhanced LADAR receiver.
© EDP Sciences, 2017
