## Quantum correlation of an optically controlled quantum system |

JOSA B, Vol. 29, Issue 2, pp. A25-A30 (2012)

http://dx.doi.org/10.1364/JOSAB.29.000A25

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### Abstract

A precise time-dependent control of a quantum system relies on an accurate account of the quantum interference among the system, the control, and the environment. A diagrammatic technique has been recently developed to precisely calculate this quantum correlation for a fast multimode coherent photon control against slow relaxation, valid for both Markovian and non-Markovian systems. We review this formalism in comparison with the existing approximate theories and extend it to cases with controls by photon state other than the coherent state.

© 2012 Optical Society of America

**OCIS Codes**

(020.5580) Atomic and molecular physics : Quantum electrodynamics

(270.2500) Quantum optics : Fluctuations, relaxations, and noise

(270.4180) Quantum optics : Multiphoton processes

**History**

Original Manuscript: October 4, 2011

Manuscript Accepted: October 27, 2011

Published: January 25, 2012

**Citation**

Ching-Kit Chan and L. J. Sham, "Quantum correlation of an optically controlled quantum system," J. Opt. Soc. Am. B **29**, A25-A30 (2012)

http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-29-2-A25

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