Information-disturbance tradeoff in estimating a maximally entangled state
Abstract
Description
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.
4 pages. Accepted for publication on Physical Review Letters
4 pages. Accepted for publication on Physical Review Letters