Entangling two atoms in spatially separated cavities through both photon emission and absorption processes

Journal Article · Fri Jun 15 04:00:00 EDT 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.75.062320· OSTI ID:20991105

Peng, Peng; Fuli, Li ^[1]

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1. Department of Applied Physics, Xi'an Jiaotong University, Xi'an 710049 (China)

We consider a system consisting of a {lambda}-type atom and a V-type atom, which are individually trapped in two spatially separated cavities that are connected by an optical fiber. We show that an extremely entangled state of the two atoms can be deterministically generated through both photon emission of the {lambda}-type atom and photon absorption of the V-type atom in an ideal situation. The influence of various decoherence processes such as spontaneous emission and photon loss on the fidelity of the entangled state is also investigated. We find that the effect of photon leakage out of the fiber on the fidelity can be greatly diminished in some special cases. In regard to the effect of spontaneous emission and photon loss from the cavities, we find that the present scheme with high fidelity may be realized under current experiment conditions. We also show that either the {lambda}- or V-type level configuration can be realized on the same atom by initializing the atomic state, and we show the present scheme is scalable.

• OSTI ID: 20991105
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 75; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION
ATOMS
LOSSES
OPTICAL FIBERS
PHOTON EMISSION
PHOTONS
QUANTUM DECOHERENCE
QUANTUM ENTANGLEMENT
SUPERRADIANCE
TRAPPING