Information-disturbance tradeoff in estimating a maximally entangled state

Details Information-disturbance tradeoff in estimating a maximally entangled state Information-disturbance tradeoff in estimating a maximally entangled state

2006-05-18

arxiv.org/abs/quant-ph/0605158v1

Phys. Rev. Lett. 96, 220502 (2006)

Physics

Quantum Physics

4 pages. Accepted for publication on Physical Review Letters

Scientific paper

10.1103/PhysRevLett.96.220502

We derive the amount of information retrieved by a quantum measurement in
estimating an unknown maximally entangled state, along with the pertaining
disturbance on the state itself. The optimal tradeoff between information and
disturbance is obtained, and a corresponding optimal measurement is provided.

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