Quantum enhancement of a coherent ladar receiver using phase-sensitive amplification

Peter A. Wasilousky; Kevin H. Smith; Ryan Glasser; Geoffrey L. Burdge; Lee Burberry; Bill Deibner; Michael Silver; Robert C. Peach; Christopher Visone; Prem Kumar; Oo-Kaw Lim; Gideon Alon; Chao-Hsiang Chen; Amar R. Bhagwat; Paritosh Manurkar; Michael Vasilyev; Muthiah Annamalai; Nikolai Stelmakh; Zachary Dutton; Saikat Guha; Cesar Santivañez; Jian Chen; Marcus Silva; Will Kelly; Jeffrey H. Shapiro; Ranjith Nair; Brent J. Yen; Franco N. C. Wong

doi:10.1117/12.892419

6 September 2011 Quantum enhancement of a coherent ladar receiver using phase-sensitive amplification

Peter A. Wasilousky, Kevin H. Smith, Ryan Glasser, Geoffrey L. Burdge, Lee Burberry, Bill Deibner, Michael Silver, Robert C. Peach, Christopher Visone, Prem Kumar, Oo-Kaw Lim, Gideon Alon, Chao-Hsiang Chen, Amar R. Bhagwat, Paritosh Manurkar, Michael Vasilyev, Muthiah Annamalai, Nikolai Stelmakh, Zachary Dutton, Saikat Guha, Cesar Santivañez, Jian Chen, Marcus Silva, Will Kelly, Jeffrey H. Shapiro, Ranjith Nair, Brent J. Yen, Franco N. C. Wong

Author Affiliations +

Proceedings Volume 8163, Quantum Communications and Quantum Imaging IX; 816305 (2011) https://doi.org/10.1117/12.892419
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

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.

Citation Download Citation

Peter A. Wasilousky, Kevin H. Smith, Ryan Glasser, Geoffrey L. Burdge, Lee Burberry, Bill Deibner, Michael Silver, Robert C. Peach, Christopher Visone, Prem Kumar, Oo-Kaw Lim, Gideon Alon, Chao-Hsiang Chen, Amar R. Bhagwat, Paritosh Manurkar, Michael Vasilyev, Muthiah Annamalai, Nikolai Stelmakh, Zachary Dutton, Saikat Guha, Cesar Santivañez, Jian Chen, Marcus Silva, Will Kelly, Jeffrey H. Shapiro, Ranjith Nair, Brent J. Yen, and Franco N. C. Wong "Quantum enhancement of a coherent ladar receiver using phase-sensitive amplification", Proc. SPIE 8163, Quantum Communications and Quantum Imaging IX, 816305 (6 September 2011); https://doi.org/10.1117/12.892419

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