Impossibility of Distinguishing Two Preparations for a Pure State from No-signaling
A pure state of a physical system can be prepared in an infinite number of ways. Quantum theory dictates that given a pure state of a physical system it is impossible to distinguish two preparation procedures. Here, we show that the impossibility of distinguishing two preparation procedures for the...
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Quanta
2020-10-01
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| Series: | Quanta |
| Online Access: | https://dankogeorgiev.com/ojs/index.php/quanta/article/view/54 |
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| author | Arun Kumar Pati |
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| author_sort | Arun Kumar Pati |
| collection | DOAJ |
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A pure state of a physical system can be prepared in an infinite number of ways. Quantum theory dictates that given a pure state of a physical system it is impossible to distinguish two preparation procedures. Here, we show that the impossibility of distinguishing two preparation procedures for the same pure state follows from the no-signaling principle. Extending this result for a pure bipartite entangled state entails that the impossibility of distinguishing two preparation procedures for a mixed state follows from the impossibility of distinguishing two preparations for a pure bipartite state.
Quanta 2020; 9: 16–21.
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| format | Article |
| id | doaj-art-2fbadde2e5fd46cf9cefc0b2a7b3ed95 |
| institution | DOAJ |
| issn | 1314-7374 |
| language | English |
| publishDate | 2020-10-01 |
| publisher | Quanta |
| record_format | Article |
| series | Quanta |
| spelling | doaj-art-2fbadde2e5fd46cf9cefc0b2a7b3ed952025-08-20T03:22:57ZengQuantaQuanta1314-73742020-10-01910.12743/quanta.v9i1.11954Impossibility of Distinguishing Two Preparations for a Pure State from No-signalingArun Kumar Pati0Harish-Chandra Research Institute A pure state of a physical system can be prepared in an infinite number of ways. Quantum theory dictates that given a pure state of a physical system it is impossible to distinguish two preparation procedures. Here, we show that the impossibility of distinguishing two preparation procedures for the same pure state follows from the no-signaling principle. Extending this result for a pure bipartite entangled state entails that the impossibility of distinguishing two preparation procedures for a mixed state follows from the impossibility of distinguishing two preparations for a pure bipartite state. Quanta 2020; 9: 16–21. https://dankogeorgiev.com/ojs/index.php/quanta/article/view/54 |
| spellingShingle | Arun Kumar Pati Impossibility of Distinguishing Two Preparations for a Pure State from No-signaling Quanta |
| title | Impossibility of Distinguishing Two Preparations for a Pure State from No-signaling |
| title_full | Impossibility of Distinguishing Two Preparations for a Pure State from No-signaling |
| title_fullStr | Impossibility of Distinguishing Two Preparations for a Pure State from No-signaling |
| title_full_unstemmed | Impossibility of Distinguishing Two Preparations for a Pure State from No-signaling |
| title_short | Impossibility of Distinguishing Two Preparations for a Pure State from No-signaling |
| title_sort | impossibility of distinguishing two preparations for a pure state from no signaling |
| url | https://dankogeorgiev.com/ojs/index.php/quanta/article/view/54 |
| work_keys_str_mv | AT arunkumarpati impossibilityofdistinguishingtwopreparationsforapurestatefromnosignaling |