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Conference Paper

Entanglement properties of optical coherent states under amplitude damping

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van Loock,  Peter
van Loock Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Wickert, R., Bernardes, N. K., & van Loock, P. (2011). Entanglement properties of optical coherent states under amplitude damping. 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-6A49-F
Abstract
Through concurrence, we characterize the entanglement of optical coherent-state qubits subject to an amplitude damping channel. We investigate the distillation capabilities of known error correcting codes and obtain upper bounds on the entanglement depending on the non-orthogonality of the input states and the channel damping parameter, thus quantitatively analysing these photon-loss codes which are naturally reminiscent of the standard qubit codes against Pauli errors.