我们再调查单程的量赤字,它是量关联从一条 thermodynamical 途径出现的一项措施。我们为一般混合状态给单程的量赤字的紧密的上面的界限,并且为这界限给一个足够的条件。最后,我们讨论一个通用方法为一般 two-qubit 状态评估单程的量赤字。
We reinvestigate the one-way quantum deficit, which is a measure of quantum correlation emerging from a thermodynamical approach. We give a tight upper bound of the one-way quantum deficit for general mixed states, and give a sufficient condition for this bound. Finally, we discuss a universal way to evaluate the one-way quantum deficit for general two-qubit states.