Entanglement properties of optical coherent states under amplitude damping

Wickert, Ricardo; Bernardes, Nadja Kolb; van Loock, Peter

doi:10.1103/PhysRevA.81.062344

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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. (2010). Entanglement properties of optical coherent states under amplitude damping. PHYSICAL REVIEW A, 81(6): 062344. doi:10.1103/PhysRevA.81.062344.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-6AEB-5

Abstract

Through concurrence, we characterize the entanglement properties 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 nonorthogonality of the coherent states and the channel damping parameter. This work provides a full quantitative analysis of these photon-loss codes which are naturally reminiscent of the standard qubit codes against Pauli errors.