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Journal Publications
Citation key | Bjeuniqu2013 |
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Author | I. Bjelakovic and H. Boche and G. Janssen |
Year | 2013 |
Journal | Journal of Mathematical Physics, Vol. 54, 032204, https://doi.org/10.1063/1.4795243 |
Abstract | We determine the optimal entanglement rate of quantum state merging when assuming that the state is unknown except for its membership in a certain set of states. We find that merging is possible at the lowest rate allowed by the individual states. Additionally, we establish a lower bound for the classical cost of state merging under state uncertainty. To this end we give an elementary proof for the cost in case of a perfectly known state which makes no use of the "resource framework". As applications of our main result, we determine the capacity for one-way entanglement distillation if the source is not perfectly known. Moreover, we give another achievability proof for the entanglement generation capacity over compound quantum channels. |