A maximally entangled seven-qubit state

作者:Zha Xin wei*; Song Hai yang; Qi Jian xia; Wang Dong; Lan Qian
来源:Journal of Physics A-Mathematical and Theoretical, 2012, 45(25): 255302.
DOI:10.1088/1751-8113/45/25/255302

摘要

A highly entangled seven-qubit state is reported that sheds some new light on a recent conjecture by Borras et al (2007 J. Phys. A: Math. Theor. 40 13407). The seven-qubit state given in this paper has 32 balanced purities equal to 1/8 and the remaining three purities equal to 1/4, whose marginal density matrices for subsystems of one and two qubits are all completely mixed.

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