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Robustness of bipartite Gaussian entanglement subject to channel losses

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Villar,  A. S.
4pi Photon Atom Coupling, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Cassemiro,  K. N.
Silberhorn Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Villar, A. S., Barbosa, F. A. S., Coelho, A. S., de Faria, A. J., Cassemiro, K. N., Nussenzveig, P., et al. (2011). Robustness of bipartite Gaussian entanglement subject to channel losses. In QUANTUM COMMUNICATION, MEASUREMENT AND COMPUTING (QCMC): THE TENTH INTERNATIONAL CONFERENCE. 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA: AMER INST PHYSICS.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-6A47-4
Abstract
Entanglement as a collective property of quantum systems follows its own dynamics as environmental disturbances enter the quantum channel. It can either withstand undesired external influences or completely vanish even for very small disturbances. Only the first kind of quantum states are suitable for real applications in quantum networks. We show the conditions under which a bipartite Gaussian state remains entangled under partial energy loss of one party.