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Xie, Chuanmei; Liu, Yimin; Li, Guofeng; Zhang, Zhanjun

A note on quantum correlations in Werner states under two collective noises. (English) Zbl 1304.81045

Quantum Inf. Process. 13, No. 12, 2713-2718 (2014).
Summary: Influences of two collective noises, i.e., the dephasing noise and the rotating noise, on quantum correlations in Werner states are considered in this note. It is found that the collective noises do not alter the correlations as far as quantum discord and geometry discord as quantifiers are concerned. Alternatively, quantum correlations in Werner states are robust against the noises.

Cited in 5 Documents

MSC:

81P40 Quantum coherence, entanglement, quantum correlations
81P15 Quantum measurement theory, state operations, state preparations
60H40 White noise theory

Keywords:

two collective noises; quantum correlation; Werner state; quantum discord; geometry discord
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References:

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