Schemes for realizing frequency up- and down-conversions in two-mode cavity QED

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Xubo Zou, Yuli Dong, and Guangcang Guo
Key Laboratory of Quantum Information, University of Science and Technology of China, Chinese Academy of Sciences, Hefei, Anhui 230026, China

Received 24 October 2005; published 7 February 2006

Wepropose experimental schemes for realizing frequency up- and down-conversion intwo-mode cavity QED by considering the atom-cavity interaction in thepresence of a strong driving classical field. In contrast tothe recent paper based on dispersive atom-cavity interaction [Serra et al.,Phys. Rev. A 71, 045802 (2005)], our scheme is basedon resonant interaction of the cavity modes with a singledriven three-level atom, so that the quantum dynamics operates ata high speed, which is important in view of decoherence.It is shown that, with the help of a strongdriving classical field, frequency up- and down-conversion operations can berealized by initially preparing the atom in a certain state.

URL:	http://link.aps.org/doi/10.1103/PhysRevA.73.025802
DOI:	10.1103/PhysRevA.73.025802
PACS:	42.50.Dv 42.50.Dv Nonclassical states of the electromagnetic field, including entangled photon states; quantum state engineering and measurements YEAR: 2006
KEYWORDS:	quantum electrodynamics, optical frequency conversion, quantum optics, quantum entanglement

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