Preprint 44/2016

One-way quantum deficit for 2xd systems

Biao-Liang Ye and Shao-Ming Fei

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Submission date: 07. Jul. 2016
Pages: 11
published in: International journal of theoretical physics, 55 (2016) 8, p. 3637-3643 
DOI number (of the published article): 10.1007/s10773-016-2993-z
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We investigate one-way quantum deficit for 2 d systems. Analytical expressions of one-way quantum deficit under both von Neumann measurement and weak measurement are presented. As an illustration, qubit-qutrit systems are studied in detail. It is shown that there exists non-zero one-way quantum deficits even quantum entanglement vanishes. Moreover, quantum deficit via weak measurement turns out to be weaker than that via von Neumann measurement. The dynamics of entanglement and one-way quantum deficit under dephasing channel is also investigated.

02.07.2022, 02:18