Experimental test of entangled histories
© 2017 Elsevier Inc. Entangled histories arise when a system partially decoheres in such a way that its past cannot be described by a sequence of states, but rather a superposition of sequences of states. Such entangled histories have not been previously observed. We propose and demonstrate the firs...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier BV
2021
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| Online Access: | https://hdl.handle.net/1721.1/134708 |
| _version_ | 1826214809029312512 |
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| author | Cotler, Jordan Duan, Lu-Ming Hou, Pan-Yu Wilczek, Frank Xu, Da Yin, Zhang-Qi Zu, Chong |
| author_facet | Cotler, Jordan Duan, Lu-Ming Hou, Pan-Yu Wilczek, Frank Xu, Da Yin, Zhang-Qi Zu, Chong |
| author_sort | Cotler, Jordan |
| collection | MIT |
| description | © 2017 Elsevier Inc. Entangled histories arise when a system partially decoheres in such a way that its past cannot be described by a sequence of states, but rather a superposition of sequences of states. Such entangled histories have not been previously observed. We propose and demonstrate the first experimental scheme to create entangled history states of the Greenberger–Horne–Zeilinger (GHZ) type. In our experiment, the polarization states of a single photon at three different times are prepared as a GHZ entangled history state. We define a GHZ functional which attains a maximum value 1 on the ideal GHZ entangled history state and is bounded above by 1∕16 for any three-time history state lacking tripartite entanglement. We have measured the GHZ functional on a state we have prepared experimentally, yielding a value of 0.656±0.005, clearly demonstrating the contribution of entangled histories. |
| first_indexed | 2024-09-23T16:11:29Z |
| format | Article |
| id | mit-1721.1/134708 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T16:11:29Z |
| publishDate | 2021 |
| publisher | Elsevier BV |
| record_format | dspace |
| spelling | mit-1721.1/1347082021-10-28T03:12:14Z Experimental test of entangled histories Cotler, Jordan Duan, Lu-Ming Hou, Pan-Yu Wilczek, Frank Xu, Da Yin, Zhang-Qi Zu, Chong © 2017 Elsevier Inc. Entangled histories arise when a system partially decoheres in such a way that its past cannot be described by a sequence of states, but rather a superposition of sequences of states. Such entangled histories have not been previously observed. We propose and demonstrate the first experimental scheme to create entangled history states of the Greenberger–Horne–Zeilinger (GHZ) type. In our experiment, the polarization states of a single photon at three different times are prepared as a GHZ entangled history state. We define a GHZ functional which attains a maximum value 1 on the ideal GHZ entangled history state and is bounded above by 1∕16 for any three-time history state lacking tripartite entanglement. We have measured the GHZ functional on a state we have prepared experimentally, yielding a value of 0.656±0.005, clearly demonstrating the contribution of entangled histories. 2021-10-27T20:08:46Z 2021-10-27T20:08:46Z 2017 2019-09-26T16:32:26Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/134708 en 10.1016/J.AOP.2017.09.004 Annals of Physics Creative Commons Attribution-NonCommercial-NoDerivs License http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf Elsevier BV arXiv |
| spellingShingle | Cotler, Jordan Duan, Lu-Ming Hou, Pan-Yu Wilczek, Frank Xu, Da Yin, Zhang-Qi Zu, Chong Experimental test of entangled histories |
| title | Experimental test of entangled histories |
| title_full | Experimental test of entangled histories |
| title_fullStr | Experimental test of entangled histories |
| title_full_unstemmed | Experimental test of entangled histories |
| title_short | Experimental test of entangled histories |
| title_sort | experimental test of entangled histories |
| url | https://hdl.handle.net/1721.1/134708 |
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