Optimality of Gaussian Discord

In this Letter we exploit the recently solved conjecture on the bosonic minimum output entropy to show the optimality of Gaussian discord, so that the computation of quantum discord for bipartite Gaussian states can be restricted to local Gaussian measurements. We prove such optimality for a large f...

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Bibliographic Details
Main Authors: Pirandola, Stefano, Spedalieri, Gaetana, Braunstein, Samuel L., Cerf, Nicolas J., Lloyd, Seth
Other Authors: Massachusetts Institute of Technology. Department of Mechanical Engineering
Format: Article
Language:en_US
Published: American Physical Society 2017
Online Access:http://hdl.handle.net/1721.1/107470