Entanglement properties of optical coherent states under amplitude damping
Quantum Physics
2011-02-10 v2
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 non-orthogonality of the coherent states and the channel damping parameter. This work provides a first, full quantitative analysis of these photon-loss codes which are naturally reminiscent of the standard qubit codes against Pauli errors.
Keywords
Cite
@article{arxiv.1004.1931,
title = {Entanglement properties of optical coherent states under amplitude damping},
author = {Ricardo Wickert and Nadja Kolb Bernardes and Peter van Loock},
journal= {arXiv preprint arXiv:1004.1931},
year = {2011}
}
Comments
7 pages, 6 figures. Revised version with small corrections; main results remain unaltered