Time-delayed quantum coherent Pyragas feedback control of photon squeezing in a degenerate parametric oscillator
Quantum Physics
2016-08-10 v1
Abstract
Quantum coherent feedback control is a measurement-free control method fully preserving quantum coherence. In this paper we show how time-delayed quantum coherent feedback can be used to control the degree of squeezing in the output field of a cavity containing a degenerate parametric oscillator. We focus on the specific situation of Pyragas-type feedback control where time-delayed signals are fed back directly into the quantum system. Our results show how time-delayed feedback can enhance or decrease the degree of squeezing as a function of time delay and feedback strength.
Keywords
Cite
@article{arxiv.1603.07137,
title = {Time-delayed quantum coherent Pyragas feedback control of photon squeezing in a degenerate parametric oscillator},
author = {Manuel Kraft and Sven Moritz Hein and Judith Lehnert and Eckehard Schöll and Stephen Hughes and Andreas Knorr},
journal= {arXiv preprint arXiv:1603.07137},
year = {2016}
}
Comments
12 pages, 6 figures