## Noise-induced quantum correlations via quantum feedback control |

JOSA B, Vol. 29, Issue 3, pp. 268-273 (2012)

http://dx.doi.org/10.1364/JOSAB.29.000268

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### Abstract

We study a physical system for creation of quantum correlations by quantum feedback control. The system is composed of two three-level atoms, each of which interacts with one of two coupled cavities. By appropriately choosing the feedback strength, we show that an arbitrary initial state can be deterministically driven to a steady-state that has a nonzero quantum discord or entanglement. It is also found that the effect of atomic spontaneous emission on quantum correlations is suppressed efficiently by increasing the frequency detuning.

© 2012 Optical Society of America

**OCIS Codes**

(270.0270) Quantum optics : Quantum optics

(270.5585) Quantum optics : Quantum information and processing

**ToC Category:**

Quantum Optics

**History**

Original Manuscript: September 7, 2011

Revised Manuscript: October 9, 2011

Manuscript Accepted: October 26, 2011

Published: February 8, 2012

**Citation**

Jie Song, Yan Xia, and Xiu-Dong Sun, "Noise-induced quantum correlations via quantum feedback control," J. Opt. Soc. Am. B **29**, 268-273 (2012)

http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-29-3-268

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