Weak Values and Continuous-Variable Entanglement Concentration

Details Weak Values and Continuous-Variable Entanglement Concentration Weak Values and Continuous-Variable Entanglement Concentration

2007-07-26

arxiv.org/abs/0707.3917v2

Physics

Quantum Physics

4 pages, 1 figure, Final version to appear in Phys. Rev. A

Scientific paper

10.1103/PhysRevA.76.062310

We demonstrate a general weak measurement model which allows Gaussian preserving entanglement concentration of the two mode squeezed vacuum. The power of this simple and elegant protocol is through the constraints it places on possible ancilla states and measurement strategies that will allow entanglement concentration. In particular, it is shown how previously discovered protocols of this kind emerge as special examples of the general model described here. Finally, as evidence of its utility, we use it to provide another novel example of such a protocol.

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