We propose a setup capable of generating Fock states of a single mode radiation field. The scheme is based on coupling the signal field to a ring cavity through cross-Kerr phase modulation, and on conditional ON-OFF photodetection at the output cavity mode. The same setup allows to prepare selected superpositions of Fock states and entangled two-mode states. Remarkably, the detector's quantum efficiency does not affect the reliability of the state synthesis.
@article{arxiv.quant-ph/9906077,
title = {State preparation by photon filtering},
author = {G. M. D'Ariano and L. Maccone and M. G. A. Paris and M. F. Sacchi},
journal= {arXiv preprint arXiv:quant-ph/9906077},
year = {2016}
}
Comments
Paper submitted to the proceedings of the III Adriatico Research Conference on Quantum Interferometry, ICTP, March 1-5,1999. 9 pages, 10 eps figures