Heralded Interaction Control between Quantum Systems
© 2020 American Physical Society. Quantum mechanical expectation values for subsets can differ substantially from those for the whole ensemble. This implies that the effect of interactions between two systems can be altered substantially by conditioning. Here, we experimentally demonstrate that, for...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society (APS)
2021
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| Online Access: | https://hdl.handle.net/1721.1/136050 |
| _version_ | 1811070769323573248 |
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| author | Duan, Yiheng Hosseini, Mahdi Beck, Kristin M Vuletić, Vladan |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Duan, Yiheng Hosseini, Mahdi Beck, Kristin M Vuletić, Vladan |
| author_sort | Duan, Yiheng |
| collection | MIT |
| description | © 2020 American Physical Society. Quantum mechanical expectation values for subsets can differ substantially from those for the whole ensemble. This implies that the effect of interactions between two systems can be altered substantially by conditioning. Here, we experimentally demonstrate that, for two light fields ψS (signal) and ψA (ancilla) that have only weakly interacted with one another, subsequent measurements on the ancilla can produce substantial conditional amplification, attenuation, or phase shift of ψS. We observe conditional signal power changes over a large range of 30, and phase shift up to π/2, induced by measurements in ancilla bases that differ only slightly from one another. The method is generically applicable to a variety of systems, and allows one to modify or boost a given interaction by trading in success probability for interaction strength. |
| first_indexed | 2024-09-23T08:41:17Z |
| format | Article |
| id | mit-1721.1/136050 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T08:41:17Z |
| publishDate | 2021 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/1360502023-02-17T19:09:02Z Heralded Interaction Control between Quantum Systems Duan, Yiheng Hosseini, Mahdi Beck, Kristin M Vuletić, Vladan Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Research Laboratory of Electronics © 2020 American Physical Society. Quantum mechanical expectation values for subsets can differ substantially from those for the whole ensemble. This implies that the effect of interactions between two systems can be altered substantially by conditioning. Here, we experimentally demonstrate that, for two light fields ψS (signal) and ψA (ancilla) that have only weakly interacted with one another, subsequent measurements on the ancilla can produce substantial conditional amplification, attenuation, or phase shift of ψS. We observe conditional signal power changes over a large range of 30, and phase shift up to π/2, induced by measurements in ancilla bases that differ only slightly from one another. The method is generically applicable to a variety of systems, and allows one to modify or boost a given interaction by trading in success probability for interaction strength. 2021-10-27T20:30:34Z 2021-10-27T20:30:34Z 2020 2021-07-09T12:19:42Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/136050 en 10.1103/PHYSREVLETT.124.223602 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society (APS) APS |
| spellingShingle | Duan, Yiheng Hosseini, Mahdi Beck, Kristin M Vuletić, Vladan Heralded Interaction Control between Quantum Systems |
| title | Heralded Interaction Control between Quantum Systems |
| title_full | Heralded Interaction Control between Quantum Systems |
| title_fullStr | Heralded Interaction Control between Quantum Systems |
| title_full_unstemmed | Heralded Interaction Control between Quantum Systems |
| title_short | Heralded Interaction Control between Quantum Systems |
| title_sort | heralded interaction control between quantum systems |
| url | https://hdl.handle.net/1721.1/136050 |
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