@inproceedings{9e3228bffc8c449e98d37d626d8e7c1c,
title = "Quantum enhancement of a coherent ladar receiver using phase-sensitive amplification",
abstract = "We demonstrate a balanced-homodyne LADAR receiver employing a phase-sensitive amplifier (PSA) to raise the effective photon detection efficiency (PDE) to nearly 100\%. Since typical LADAR receivers suffer from losses in the receive optical train that routinely limit overall PDE to less than 50\% thus degrading SNR, PSA can provide significant improvement through amplification with noise figure near 0 dB. Receiver inefficiencies arise from sub-unity quantum efficiency, array fill factors, signal-local oscillator mixing efficiency (in coherent receivers), etc. The quantum-enhanced LADAR receiver described herein is employed in target discrimination scenarios as well as in imaging applications. We present results showing the improvement in detection performance achieved with a PSA, and discuss the performance advantage when compared to the use of a phase-insensitive amplifier, which cannot amplify noiselessly.",
keywords = "LADAR, balanced homodyne detection, coherent detection, heterodyne LADAR, phase-sensitive amplification",
author = "Wasilousky, \{Peter A.\} and Smith, \{Kevin H.\} and Ryan Glasser and Burdge, \{Geoffrey L.\} and Lee Burberry and Bill Deibner and Michael Silver and Peach, \{Robert C.\} and Christopher Visone and Prem Kumar and Lim, \{Oo Kaw\} and Gideon Alon and Chen, \{Chao Hsiang\} and Bhagwat, \{Amar R.\} and Paritosh Manurkar and Michael Vasilyev and Muthiah Annamalai and Nikolai Stelmakh and Zachary Dutton and Saikat Guha and Cesar Santiva{\~n}ez and Jian Chen and Marcus Silva and Will Kelly and Shapiro, \{Jeffrey H.\} and Ranjith Nair and Yen, \{Brent J.\} and Wong, \{Franco N.C.\}",
year = "2011",
doi = "10.1117/12.892419",
language = "English (US)",
isbn = "9780819487735",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Quantum Communications and Quantum Imaging IX",
note = "Quantum Communications and Quantum Imaging IX ; Conference date: 24-08-2011 Through 25-08-2011",
}