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arxiv quant-ph/0505037 v2 pith:56FL3DAU submitted 2005-05-06 quant-ph

Information transfer in leaky atom-cavity systems

classification quant-ph
keywords systemcavitiescavityconsiderinformationswappingtransfertwo-level
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We consider first a system of two enatangled cavities and a single two-level atom passing through one of them. A ``monogamy'' inequality for this tripartite system is quantitatively studied and verified in the presence of cavity leakage. We next consider the simultaneous passage of two-level atoms through both the cavities. Entanglement swapping is observed between the two-cavity and the two-atom system. Cavity dissipation leads to the quantitative reduction of information transfer though preserving the basic swapping property.

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