Breakdown of the cross-Kerr scheme for Photon Counting
Quantum Physics
2013-04-04 v1
Abstract
We show, in the context of single photon detection, that an atomic three-level model for a transmon in a transmission line does not support the predictions of the nonlinear polarisability model known as the cross-Kerr effect. We show that the induced displacement of a probe in the presence or absence of a single photon in the signal field, cannot be resolved above the quantum noise in the probe. This strongly suggests that cross-Kerr media are not suitable for photon counting or related single photon applications. Our results are presented in the context of a transmon in a one dimensional microwave waveguide, but the conclusions also apply to optical systems.
Keywords
Cite
@article{arxiv.1210.0991,
title = {Breakdown of the cross-Kerr scheme for Photon Counting},
author = {Bixuan Fan and Anton F. Kockum and Joshua Combes and Göran Johansson and Io-chun Hoi and Christopher Wilson and Per Delsing and G. J. Milburn and Thomas M. Stace},
journal= {arXiv preprint arXiv:1210.0991},
year = {2013}
}