Entanglement amplification via local weak measurements

Details Entanglement amplification via local weak measurements Entanglement amplification via local weak measurements

2012-01-11

arxiv.org/abs/1201.2232v1

Physics

Quantum Physics

6 pages, 3 figures

Scientific paper

We propose a measurement-based method to produce a maximally-entangled state from a partially-entangled pure state. Our goal can be thought of entanglement distillation from a single copy of a partially-entangled pure state. The present approach involves local two-outcome weak measurements. We show that applications of these local weak measurements lead to a probabilistic amplification of the entanglement. In addition, we examine how the probability to find the maximally-entangled state is characterized by the entanglement of the input state.

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