Realistic constraints on photonic quantum interferometry

Gerald N. Gilbert; Michael D. Hamrick; Yaakov S. Weinstein

doi:10.1117/12.763528

11 February 2008 Realistic constraints on photonic quantum interferometry

Gerald N. Gilbert, Michael D. Hamrick, Yaakov S. Weinstein

Proceedings Volume 6906, Quantum Electronics Metrology; 69060H (2008) https://doi.org/10.1117/12.763528
Event: Integrated Optoelectronic Devices 2008, 2008, San Jose, California, United States

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.

Citation Download Citation

Gerald N. Gilbert, Michael D. Hamrick, and Yaakov S. Weinstein "Realistic constraints on photonic quantum interferometry", Proc. SPIE 6906, Quantum Electronics Metrology, 69060H (11 February 2008); https://doi.org/10.1117/12.763528

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