Mixed-state sensitivity of several quantum-information benchmarks

by: Nicholas A Peters, Tzu C Wei, Paul G Kwiat

Physical Review A (Atomic, Molecular, and Optical Physics), Vol. 70, No. 5. (2004)

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Abstract

We investigate an imbalance between the sensitivity of the common state measures—fidelity, trace distance, concurrence, tangle, von Neumann entropy, and linear entropy—when acted on by a depolarizing channel. Further, in this context we explore two classes of two-qubit entangled mixed states. Specifically, we illustrate a sensitivity imbalance between three of these measures for depolarized (i.e., Werner-state-like) nonmaximally entangled and maximally entangled mixed states, noting that the size of the imbalance depends on the state's tangle and linear entropy.

@article{citeulike:1166382, abstract = {We investigate an imbalance between the sensitivity of the common state measures\&\#151;fidelity, trace distance, concurrence, tangle, von Neumann entropy, and linear entropy\&\#151;when acted on by a depolarizing channel. Further, in this context we explore two classes of two-qubit entangled mixed states. Specifically, we illustrate a sensitivity imbalance between three of these measures for depolarized (i.e., Werner-state-like) nonmaximally entangled and maximally entangled mixed states, noting that the size of the imbalance depends on the state's tangle and linear entropy.}, author = {Peters, Nicholas A. and Wei, Tzu C. and Kwiat, Paul G. }, citeulike-article-id = {1166382}, doi = {http://dx.doi.org/10.1103/PhysRevA.70.052309}, journal = {Physical Review A (Atomic, Molecular, and Optical Physics)}, keywords = {benchmark, mems}, number = {5}, posted-at = {2007-03-16 01:03:16}, priority = {0}, publisher = {APS}, title = {Mixed-state sensitivity of several quantum-information benchmarks}, url = {http://dx.doi.org/10.1103/PhysRevA.70.052309}, volume = {70}, year = {2004} }

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TY - JOUR ID - citeulike:1166382 L3 - citeulike-article-id:1166382 TI - Mixed-state sensitivity of several quantum-information benchmarks JF - Physical Review A (Atomic, Molecular, and Optical Physics) VL - 70 IS - 5 PB - APS N2 - We investigate an imbalance between the sensitivity of the common state measuresfidelity, trace distance, concurrence, tangle, von Neumann entropy, and linear entropywhen acted on by a depolarizing channel. Further, in this context we explore two classes of two-qubit entangled mixed states. Specifically, we illustrate a sensitivity imbalance between three of these measures for depolarized (i.e., Werner-state-like) nonmaximally entangled and maximally entangled mixed states, noting that the size of the imbalance depends on the state's tangle and linear entropy. KW - benchmark KW - mems AU - Peters, Nicholas AU - Wei, Tzu AU - Kwiat, Paul PY - 2004/// UR - http://dx.doi.org/10.1103/PhysRevA.70.052309 ER -

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