Extremality Of Gaussian Quantum States

PHYSICAL REVIEW LETTERS, no. 8 (2006): 080502-080502

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We investigate Gaussian quantum states in view of their exceptional role within the space of all continuous variables states. A general method for deriving extremality results is provided and applied to entanglement measures, secret key distillation and the classical capacity of bosonic quantum channels. We prove that for every given cova...更多

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