Robustness of bipartite Gaussian entangled beams propagating in lossy channels

• Published in: Nature photonics Vol. 4; no. 12; pp. 858 - 861
• Main Authors: Barbosa, F. A. S., Coelho, A. S., de Faria, A. J., Cassemiro, K. N., Villar, A. S., Nussenzveig, P., Martinelli, M.
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 01.12.2010; Nature Publishing Group
• Subjects: 639/624/400/482; Applied and Technical Physics; Applied sciences; Beams (radiation); Channels; Classical and quantum physics: mechanics and fields; Constraining; Cryptography; Entanglement; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Gaussian; letter; Optical telecommunications; Optics; Physics; Physics and Astronomy; Quantum communication; Quantum information; Quantum Physics; Robustness; Tasks; Telecommunications; Telecommunications and information theory; Wave optics; Wave propagation, transmission and absorption; Gaussian beam; Optical beam; Quantum entanglement; Electromagnetic wave propagation; Optical communication; Quantum information; Quantum communication

Subtle quantum properties offer exciting new prospects in optical communications. For example, quantum entanglement enables the secure exchange of cryptographic keys 1 and the distribution of quantum information by teleportation 2 , 3 . Entangled bright beams of light are increasingly appealing for...