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Proceedings Paper

Realistic constraints on photonic quantum interferometry
Author(s): Gerald N. Gilbert; Michael D. Hamrick; Yaakov S. Weinstein
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Paper Abstract

We analyze the phase estimation ability of photonic N00N states propagating in a lossy medium. In such a medium a N00N state of N enangled photons cannot achieve the maximum 1/N phase estimation resolution. In fact, unless the transmittance of the medium is extremely high, a signal comprised of an attenuated separable state of N photons will produce a better phase estimate than a comparable signal of an equally attenuated N00N state. Thus, for most practical applications the resolution provided photonic N00N states is actually worse than the 1/√N Standard Quantum Limit. This performance deficit becomes more pronounced as the number of photons in the signal increases.

Paper Details

Date Published: 11 February 2008
PDF: 8 pages
Proc. SPIE 6906, Quantum Electronics Metrology, 69060H (11 February 2008); doi: 10.1117/12.763528
Show Author Affiliations
Gerald N. Gilbert, The MITRE Corp. (United States)
Michael D. Hamrick, The MITRE Corp. (United States)
Yaakov S. Weinstein, The MITRE Corp. (United States)

Published in SPIE Proceedings Vol. 6906:
Quantum Electronics Metrology
Alan E. Craig; Selim M. Shahriar, Editor(s)

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