Seminar #1

2020년 12월 10일 (목) 14:00 ~ 15:30

연사: 김호준 (경희대)

One-shot manipulation of entanglement for quantum channels

We show that the dynamic resource theory of quantum entanglement can be formulated using the superchannel theory. In this formulation we define the separable channels as free resource, the class of free superchannels that sends separable channels to themselves, and chose the swap channels as dynamic entanglement resources. Our first result is that the one-shot dynamic entanglement cost of a bipartite quantum channel under the free superchannels is bounded by the standard log-robustness of channels. The one-shot distillable dynamic entanglement of a bipartite quantum channel under the free superchannels is found to be bounded by a resource monotone that we construct from the hypothesis-testing relative entropy of channels with minimization over separable channels. We also address the one-shot catalytic dynamic entanglement cost of a bipartite quantum channel under a larger class of free superchannels that could generate the dynamic entanglement which is asymptotically negligible; it is bounded by the generalized log-robustness of channels.