Abstract
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 deficit even quantum entanglement vanishes. Moreover, one-way 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 channels is also investigated.
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This work is supported by NSFC under number 11275131.
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Ye, BL., Fei, SM. One-Way Quantum Deficit for 2 ⊗ d Systems. Int J Theor Phys 55, 3637–3643 (2016). https://doi.org/10.1007/s10773-016-2993-z
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DOI: https://doi.org/10.1007/s10773-016-2993-z