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arXiv · 1410.6550

One-Way Deficit of Two Qubit X States

Yao-Kun Wang·Naihuan Jing·Shao-Ming Fei·Zhi-Xi Wang·Jun-Peng Cao·Heng Fan
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Abstract

Quantum deficit originates in questions regarding work extraction from quantum systems coupled to a heat bath [Phys. Rev. Lett. 89, 180402 (2002)]. It links quantum correlations with quantum thermodynamics and provides a new standpoint for understanding quantum non-locality. In this paper, we propose a new method to evaluate the one-way deficit for a class of two-qubit states. The dynamic behavior of the one-way deficit under decoherence channel is investigated and it is shown that the one-way deficit of the X states with five parameters is more robust against the decoherence than the entanglement.

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Yao-Kun Wang, Naihuan Jing, Shao-Ming Fei, Zhi-Xi Wang, Jun-Peng Cao, Heng Fan. 2015-06-15. One-Way Deficit of Two Qubit X States. https://doi.org/10.1007/s11128-015-1005-1

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