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Proceedings Paper

Quantum-enhanced ladar ranging with squeezed-vacuum injection, phase-sensitive amplification, and slow photodetectors
Author(s): Ranjith Nair; Brent J. Yen; Jeffrey H. Shapiro; Jian Chen; Zachary Dutton; Saikat Guha; Marcus P. da Silva
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Paper Abstract

Theory has shown [1] that the quantum enhancements afforded by squeezed-vacuum injection (SVI) and phasesensitive amplification (PSA) can improve the spatial resolution of a soft-aperture, homodyne-detection laserradar (ladar) system. Here we show they can improve the range resolution of such a ladar system. In particular, because an experimental PSA-enhanced system is being built whose slow photodetectors imply multi-pulse integration, we develop range-measurement theory that encompasses its processing architecture. We allow the target to have an arbitrary mixture of specular and speckle components, and present computer simulation results demonstrating the range-resolution improvement that accrues from quantum enhancement with PSA.

Paper Details

Date Published: 6 September 2011
PDF: 14 pages
Proc. SPIE 8163, Quantum Communications and Quantum Imaging IX, 816310 (6 September 2011); doi: 10.1117/12.903360
Show Author Affiliations
Ranjith Nair, Massachusetts Institute of Technology (United States)
Brent J. Yen, Massachusetts Institute of Technology (United States)
Jeffrey H. Shapiro, Massachusetts Institute of Technology (United States)
Jian Chen, Raytheon BBN Technologies (United States)
Zachary Dutton, Raytheon BBN Technologies (United States)
Saikat Guha, Raytheon BBN Technologies (United States)
Marcus P. da Silva, Raytheon BBN Technologies (United States)

Published in SPIE Proceedings Vol. 8163:
Quantum Communications and Quantum Imaging IX
Ronald E. Meyers; Yanhua Shih; Keith S. Deacon, Editor(s)

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