Thursday, July 11, 2013

1307.2676 (W. Maimaiti et al.)

Efficiency of Entanglement Concentration by Photon Subtraction    [PDF]

W. Maimaiti, S. Mancini
We introduce a measure of efficiency for the photon subtraction protocol aimed at entanglement concentration on a single copy of bipartite continuous variable state. We then show that iterating the protocol does not lead to higher efficiency than a single application. In order to overcome this limit we present an adaptive version of the protocol able to greatly enhance its efficiency.
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