Nonlinear Interferometry via Fock State Projection
Quantum Physics
2009-11-13 v2
Abstract
We use a photon-number resolving detector to monitor the photon number distribution of the output of an interferometer, as a function of phase delay. As inputs we use coherent states with mean photon number up to seven. The postselection of a specific Fock (photon-number) state effectively induces high-order optical non-linearities. Following a scheme by Bentley and Boyd [S.J. Bentley and R.W. Boyd, Optics Express 12, 5735 (2004)] we explore this effect to demonstrate interference patterns a factor of five smaller than the Rayleigh limit.
Cite
@article{arxiv.quant-ph/0601104,
title = {Nonlinear Interferometry via Fock State Projection},
author = {G. Khoury and H. S. Eisenberg and E. J. S. Fonseca and D. Bouwmeester},
journal= {arXiv preprint arXiv:quant-ph/0601104},
year = {2009}
}
Comments
4 pages, 5 figures