Physics – Quantum Physics
Scientific paper
2010-04-04
J. Phys. A: Math. Theor. 44 045304 (2011)
Physics
Quantum Physics
Scientific paper
10.1088/1751-8113/44/4/045304
We investigate the quantum information reclaim from the environment after amplitude damping has occurred. In particular we address the question of optimal measurement on the environment to perform the best possible correction on two and three dimensional quantum systems. Depending on the dimension we show that the entanglement fidelity (the measure quantifying the correction performance) is or is not the same for all possible measurements and uncover the optimal measurement leading to the maximum entanglement fidelity.
Cafaro Carlo
Mancini Stefano
Memarzadeh Laleh
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