Chang-Yong Chen et al 2006 J. Phys. A: Math. Gen. 39 11861 doi:10.1088/0305-4470/39/38/011
Analytical treatment of W-state preparation in cavity QED in the presence of very weak dissipation
Chang-Yong Chen1,2,3, Ke-Lin Gao2 and Mang Feng2
Show affiliationsWe propose an analytical treatment method of generation of multipartite W-type states with a single-resonant interaction of the atoms with the cavity mode in cavity QED, under the consideration of very weak decay from the excited atomic level and from the cavity mode. By manipulating different coupling strengths between the atoms and the cavity mode, we show how to deterministically produce W states, including the standard W state and the one with arbitrary coefficients. The corresponding analytical expressions are given, indicating that the detrimental influence from the atomic spontaneous emission is three times that from the cavity decay. The experimental feasibility of our scheme is also discussed by using current cavity QED techniques.
- PACS
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42.50.Pq Cavity quantum electrodynamics; micromasers
42.50.Dv Quantum state engineering and measurements
03.65.Ta Foundations of quantum mechanics; measurement theory
- MSC
- Subjects
- Dates
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Issue 38 (22 September 2006)
Received 31 May 2006, in final form 30 June 2006
Published 5 September 2006
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Analytical treatment of W-state preparation in cavity QED in the presence of very weak dissipation
Chang-Yong Chen et al 2006 J. Phys. A: Math. Gen. 39 11861
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