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MiS Preprint
44/2016
One-way quantum deficit for 2xd systems
Biao-Liang Ye and Shao-Ming Fei
Abstract
We investigate one-way quantum deficit for $2\otimes d$ 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.
