Quantum filtering for a two-level atom driven by two counter-propagating photons
Quantum Physics
2019-03-14 v1 Optimization and Control
Abstract
The purpose of this paper is to propose quantum filters for a two-level atom driven by two continuous-mode counter-propagating photons and under continuous measurements. Two scenarios of multiple measurements, 1) homodyne detection plus photodetection, and 2) two homodyne detections, are discussed. Filtering equations for both cases are derived explicitly. As demonstration, the two input photons with rising exponential and Gaussian pulse shapes are used to excite a two-level atom under two homodyne detection measurements. Simulations reveal scaling relations between atom-photon coupling and photonic pulse shape for maximum atomic excitation.
Cite
@article{arxiv.1903.05307,
title = {Quantum filtering for a two-level atom driven by two counter-propagating photons},
author = {Zhiyuan Dong and Guofeng Zhang and Nina H. Amini},
journal= {arXiv preprint arXiv:1903.05307},
year = {2019}
}
Comments
28 pages, 6 figures, accepted by Quantum Information Processing