Coherent phase slips in coupled matter-wave circuits
Quantum phase slips are a dual process of particle tunneling in coherent networks. Besides being of central interest to condensed matter physics, quantum phase slips are resources that are sought to be manipulated in quantum circuits. Here, we devise a specific matter-wave circuit enlightening quant...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2022-05-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.4.L022038 |
| _version_ | 1797210742714269696 |
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| author | A. Pérez-Obiol J. Polo L. Amico |
| author_facet | A. Pérez-Obiol J. Polo L. Amico |
| author_sort | A. Pérez-Obiol |
| collection | DOAJ |
| description | Quantum phase slips are a dual process of particle tunneling in coherent networks. Besides being of central interest to condensed matter physics, quantum phase slips are resources that are sought to be manipulated in quantum circuits. Here, we devise a specific matter-wave circuit enlightening quantum phase slips. Specifically, we investigate the quantum many-body dynamics of two side-by-side ring-shaped neutral bosonic systems coupled through a weak link. By imparting a suitable magnetic flux, persistent currents flow in each ring with given winding numbers. We demonstrate that coherent phase slips occur as winding number transfer among the two rings, with the populations in each ring remaining nearly constant. Such a phenomenon occurs as a result of a specific entanglement of circulating states, that, as such, cannot be captured by a mean-field treatment of the system. Our work can be relevant for the observation of quantum phase slips in cold-atom experiments and their manipulation in matter-wave circuits. To make contact with the field, we show that the phenomenon has clear signatures in the momentum distribution of the system providing the time-of-flight image of the condensate. |
| first_indexed | 2024-04-24T10:15:26Z |
| format | Article |
| id | doaj.art-a60d73040cdf4a7eb8b889b0db80732d |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:15:26Z |
| publishDate | 2022-05-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-a60d73040cdf4a7eb8b889b0db80732d2024-04-12T17:20:58ZengAmerican Physical SocietyPhysical Review Research2643-15642022-05-0142L02203810.1103/PhysRevResearch.4.L022038Coherent phase slips in coupled matter-wave circuitsA. Pérez-ObiolJ. PoloL. AmicoQuantum phase slips are a dual process of particle tunneling in coherent networks. Besides being of central interest to condensed matter physics, quantum phase slips are resources that are sought to be manipulated in quantum circuits. Here, we devise a specific matter-wave circuit enlightening quantum phase slips. Specifically, we investigate the quantum many-body dynamics of two side-by-side ring-shaped neutral bosonic systems coupled through a weak link. By imparting a suitable magnetic flux, persistent currents flow in each ring with given winding numbers. We demonstrate that coherent phase slips occur as winding number transfer among the two rings, with the populations in each ring remaining nearly constant. Such a phenomenon occurs as a result of a specific entanglement of circulating states, that, as such, cannot be captured by a mean-field treatment of the system. Our work can be relevant for the observation of quantum phase slips in cold-atom experiments and their manipulation in matter-wave circuits. To make contact with the field, we show that the phenomenon has clear signatures in the momentum distribution of the system providing the time-of-flight image of the condensate.http://doi.org/10.1103/PhysRevResearch.4.L022038 |
| spellingShingle | A. Pérez-Obiol J. Polo L. Amico Coherent phase slips in coupled matter-wave circuits Physical Review Research |
| title | Coherent phase slips in coupled matter-wave circuits |
| title_full | Coherent phase slips in coupled matter-wave circuits |
| title_fullStr | Coherent phase slips in coupled matter-wave circuits |
| title_full_unstemmed | Coherent phase slips in coupled matter-wave circuits |
| title_short | Coherent phase slips in coupled matter-wave circuits |
| title_sort | coherent phase slips in coupled matter wave circuits |
| url | http://doi.org/10.1103/PhysRevResearch.4.L022038 |
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