Josephson-like Oscillations in Toroidal Spinor Bose–Einstein Condensates: A Prospective Symmetry Probe
Josephson junctions are essential ingredients in the superconducting circuits used in many existing quantum technologies. Additionally, ultracold atomic quantum gases have also become essential platforms to study superfluidity. Here, we explore the analogy between superconductivity and superfluidity...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Symmetry |
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| Online Access: | https://www.mdpi.com/2073-8994/14/5/867 |
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| author | Mário H. Figlioli Donato Sérgio R. Muniz |
| author_facet | Mário H. Figlioli Donato Sérgio R. Muniz |
| author_sort | Mário H. Figlioli Donato |
| collection | DOAJ |
| description | Josephson junctions are essential ingredients in the superconducting circuits used in many existing quantum technologies. Additionally, ultracold atomic quantum gases have also become essential platforms to study superfluidity. Here, we explore the analogy between superconductivity and superfluidity to present an intriguing effect caused by a thin finite barrier in a quasi-one-dimensional toroidal spinor Bose–Einstein condensate (BEC). In this system, the atomic current density flowing through the edges of the barrier oscillates, such as the electrical current through a Josephson junction in a superconductor, but in our case, there is no current circulation through the barrier. We also show how the nontrivial broken-symmetry states of spinor BECs change the structure of this Josephson-like current, creating the possibility to probe the spinor symmetry, solely using measurements of this superfluid current. |
| first_indexed | 2024-03-10T01:44:42Z |
| format | Article |
| id | doaj.art-dab39504f0f3449cb0ef6e23b23b6fad |
| institution | Directory Open Access Journal |
| issn | 2073-8994 |
| language | English |
| last_indexed | 2024-03-10T01:44:42Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Symmetry |
| spelling | doaj.art-dab39504f0f3449cb0ef6e23b23b6fad2023-11-23T13:17:21ZengMDPI AGSymmetry2073-89942022-04-0114586710.3390/sym14050867Josephson-like Oscillations in Toroidal Spinor Bose–Einstein Condensates: A Prospective Symmetry ProbeMário H. Figlioli Donato0Sérgio R. Muniz1Instituto de Física de São Carlos, Universidade de São Paulo, IFSC-USP Caixa Postal 369, São Carlos 13560-970, SP, BrazilInstituto de Física de São Carlos, Universidade de São Paulo, IFSC-USP Caixa Postal 369, São Carlos 13560-970, SP, BrazilJosephson junctions are essential ingredients in the superconducting circuits used in many existing quantum technologies. Additionally, ultracold atomic quantum gases have also become essential platforms to study superfluidity. Here, we explore the analogy between superconductivity and superfluidity to present an intriguing effect caused by a thin finite barrier in a quasi-one-dimensional toroidal spinor Bose–Einstein condensate (BEC). In this system, the atomic current density flowing through the edges of the barrier oscillates, such as the electrical current through a Josephson junction in a superconductor, but in our case, there is no current circulation through the barrier. We also show how the nontrivial broken-symmetry states of spinor BECs change the structure of this Josephson-like current, creating the possibility to probe the spinor symmetry, solely using measurements of this superfluid current.https://www.mdpi.com/2073-8994/14/5/867Josephson effectBose–Einstein condensatespinor BECtoroidal superfluid |
| spellingShingle | Mário H. Figlioli Donato Sérgio R. Muniz Josephson-like Oscillations in Toroidal Spinor Bose–Einstein Condensates: A Prospective Symmetry Probe Symmetry Josephson effect Bose–Einstein condensate spinor BEC toroidal superfluid |
| title | Josephson-like Oscillations in Toroidal Spinor Bose–Einstein Condensates: A Prospective Symmetry Probe |
| title_full | Josephson-like Oscillations in Toroidal Spinor Bose–Einstein Condensates: A Prospective Symmetry Probe |
| title_fullStr | Josephson-like Oscillations in Toroidal Spinor Bose–Einstein Condensates: A Prospective Symmetry Probe |
| title_full_unstemmed | Josephson-like Oscillations in Toroidal Spinor Bose–Einstein Condensates: A Prospective Symmetry Probe |
| title_short | Josephson-like Oscillations in Toroidal Spinor Bose–Einstein Condensates: A Prospective Symmetry Probe |
| title_sort | josephson like oscillations in toroidal spinor bose einstein condensates a prospective symmetry probe |
| topic | Josephson effect Bose–Einstein condensate spinor BEC toroidal superfluid |
| url | https://www.mdpi.com/2073-8994/14/5/867 |
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