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Phys. Rev. A 72, 054301 (2005) [4 pages]

Quantum trajectory simulation of controlled phase-flip gates using the vacuum Rabi splitting

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Hayato Goto and Kouichi Ichimura
Frontier Research Laboratory, Corporate Research and Development Center, Toshiba Corporation, Komukai, Toshiba-cho Saiwai-ku Kawasaki 212-8582, Japan

Received 12 July 2005; published 16 November 2005

The atom-photon controlled phase-flip gates using vacuum Rabi splitting proposed by Duan and Kimble Phys. Rev. Lett. 92 127902 (2004)] are simulated by a quantum trajectory approach. Atomic nonradiative dephasing and intracavity loss due to absorption and scattering by cavity mirrors are taken into account in addition to atomic spontaneous emission. The gate fidelity calculated by the trajectory approach is compared with that obtained by a simple amplitude-damping model. The gate fidelity under the condition of no photon loss is also discussed.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.72.054301
DOI:
10.1103/PhysRevA.72.054301
PACS:
03.67.Lx, 42.50.Pq