Locking and unlocking of quantum nonlocality without entanglement in local discrimination of quantum states
| Autor: | Ha, Donghoon, Kim, Jeong San |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Scientific Reports, 12, 3961 (2022) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1038/s41598-022-07930-w |
| Popis: | The phenomenon of nonlocality without entanglement(NLWE) arises in discriminating multi-party quantum separable states. Recently, it has been found that the post-measurement information about the prepared subensemble can lock or unlock NLWE in minimum-error discrimination of non-orthogonal separable states. Thus, it is natural to ask whether the availability of the post-measurement information can influence on the occurrence of NLWE even in other state-discrimination strategies. Here, we show that the post-measurement information can be used to lock as well as unlock the occurrence of NLWE in terms of optimal unambiguous discrimination. Our results can provide a useful application for hiding or sharing information based on non-orthogonal separable states. Comment: 12 pages, 2 figures, published version |
| Databáze: | arXiv |
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