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arXiv:1410.6550 · Quantum Information Processing

One-way deficit of two-qubit XXX X states

Yaokun Wang, Naihuan Jing, Shao-Ming Fei, Zhi‐Xi Wang, Jun-Peng Cao, Heng Fan

Published Apr 30, 2015• 10 citations
arXivHTMLPDF
DOI
10.1007/s11128-015-1005-1

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So far, one-way information deficit (OWID) has been calculated explicitly only for Bell-diagonal states and the four-parameter family of X-states with additional assumptions and expressions for more general quantum states are not known. In this paper, we derive explicit expressions for OWID for a larger class of two-qubit states, namely, a five-parameter family of two-qubit states. The dynamic behavior of the OWID under decoherence channel is investigated and it is shown that the OWID is more robust against the decoherence than the entanglement.