Topological superfluidity with repulsive alkaline-earth atoms in optical lattices
We discuss a realization of topological superfluidity with fermionic atoms in an optical lattice. We consider a situation where atoms in two internal states experience different lattice potentials: one species is localized and the other itinerant, and show how quantum fluctuations of the localized f...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2019-01-01
|
| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/ab2ee0 |
| _version_ | 1797750046333075456 |
|---|---|
| author | L Isaev A Kaufman G Ortiz A M Rey |
| author_facet | L Isaev A Kaufman G Ortiz A M Rey |
| author_sort | L Isaev |
| collection | DOAJ |
| description | We discuss a realization of topological superfluidity with fermionic atoms in an optical lattice. We consider a situation where atoms in two internal states experience different lattice potentials: one species is localized and the other itinerant, and show how quantum fluctuations of the localized fermions give rise to an attraction and spin–orbit coupling in the itinerant band. At low temperature, these effects stabilize a topological superfluid of mobile atoms even if their bare interactions are repulsive. This emergent state can be engineered with alkaline-earth atoms in a superlattice with a dimerized unit cell. To probe its unique properties we describe protocols that use high spectral resolution and controllability of a narrow clock transition, such as momentum-resolved spectroscopy and supercurrent response to a synthetic (laser-induced) magnetic field. |
| first_indexed | 2024-03-12T16:27:10Z |
| format | Article |
| id | doaj.art-1c99cd8e29d842758fc15e8bf58c4782 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:27:10Z |
| publishDate | 2019-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-1c99cd8e29d842758fc15e8bf58c47822023-08-08T15:39:27ZengIOP PublishingNew Journal of Physics1367-26302019-01-0121707304910.1088/1367-2630/ab2ee0Topological superfluidity with repulsive alkaline-earth atoms in optical latticesL Isaev0A Kaufman1G Ortiz2https://orcid.org/0000-0003-3254-4494A M Rey3JILA, NIST, Department of Physics & Center for Theory of Quantum Matter, University of Colorado , 440 UCB, Boulder, CO 80309, United States of AmericaJILA, NIST, Department of Physics & Center for Theory of Quantum Matter, University of Colorado , 440 UCB, Boulder, CO 80309, United States of AmericaDepartment of Physics and Center for Exploration of Energy and Matter, Indiana University , Bloomington IN 47405, United States of AmericaJILA, NIST, Department of Physics & Center for Theory of Quantum Matter, University of Colorado , 440 UCB, Boulder, CO 80309, United States of AmericaWe discuss a realization of topological superfluidity with fermionic atoms in an optical lattice. We consider a situation where atoms in two internal states experience different lattice potentials: one species is localized and the other itinerant, and show how quantum fluctuations of the localized fermions give rise to an attraction and spin–orbit coupling in the itinerant band. At low temperature, these effects stabilize a topological superfluid of mobile atoms even if their bare interactions are repulsive. This emergent state can be engineered with alkaline-earth atoms in a superlattice with a dimerized unit cell. To probe its unique properties we describe protocols that use high spectral resolution and controllability of a narrow clock transition, such as momentum-resolved spectroscopy and supercurrent response to a synthetic (laser-induced) magnetic field.https://doi.org/10.1088/1367-2630/ab2ee0topological superfluidityultra-cold atomsMajorana modesSr optical lattice clock |
| spellingShingle | L Isaev A Kaufman G Ortiz A M Rey Topological superfluidity with repulsive alkaline-earth atoms in optical lattices New Journal of Physics topological superfluidity ultra-cold atoms Majorana modes Sr optical lattice clock |
| title | Topological superfluidity with repulsive alkaline-earth atoms in optical lattices |
| title_full | Topological superfluidity with repulsive alkaline-earth atoms in optical lattices |
| title_fullStr | Topological superfluidity with repulsive alkaline-earth atoms in optical lattices |
| title_full_unstemmed | Topological superfluidity with repulsive alkaline-earth atoms in optical lattices |
| title_short | Topological superfluidity with repulsive alkaline-earth atoms in optical lattices |
| title_sort | topological superfluidity with repulsive alkaline earth atoms in optical lattices |
| topic | topological superfluidity ultra-cold atoms Majorana modes Sr optical lattice clock |
| url | https://doi.org/10.1088/1367-2630/ab2ee0 |
| work_keys_str_mv | AT lisaev topologicalsuperfluiditywithrepulsivealkalineearthatomsinopticallattices AT akaufman topologicalsuperfluiditywithrepulsivealkalineearthatomsinopticallattices AT gortiz topologicalsuperfluiditywithrepulsivealkalineearthatomsinopticallattices AT amrey topologicalsuperfluiditywithrepulsivealkalineearthatomsinopticallattices |