Experimental demonstration of nonlocal effects of the partial collapse measurement and reversal process

Details Experimental demonstration of nonlocal effects of the partial collapse measurement and reversal process Experimental demonstration of nonlocal effects of the partial collapse measurement and reversal process

2010-12-21

arxiv.org/abs/1012.4597v3

Physical Review A 83, 010101(R) (2011)

Physics

Quantum Physics

Scientific paper

We experimentally demonstrate the nonlocal reversal of a partial-collapse quantum measurement on two-photon entangled state. Both the partial measurement and the reversal operation are implemented in linear optics with two displaced Sagnac interferometers, which are characterized by single qubit quantum process tomography. The recovered state is measured by quantum state tomography and its nonlocality is characterized by testing the Bell inequality. Our result will be helpful in quantum communication and quantum error correction.

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