Motional ground-state cooling of single atoms in state-dependent optical tweezers
Laser cooling of single atoms in optical tweezers is a prerequisite for neutral atom quantum computing and simulation. Resolved sideband cooling comprises a well-established method for efficient motional ground-state preparation, but typically requires careful cancellation of light shifts in so-call...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2023-08-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.5.033093 |
| _version_ | 1797210445466042368 |
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| author | C. Hölzl A. Götzelmann M. Wirth M. S. Safronova S. Weber F. Meinert |
| author_facet | C. Hölzl A. Götzelmann M. Wirth M. S. Safronova S. Weber F. Meinert |
| author_sort | C. Hölzl |
| collection | DOAJ |
| description | Laser cooling of single atoms in optical tweezers is a prerequisite for neutral atom quantum computing and simulation. Resolved sideband cooling comprises a well-established method for efficient motional ground-state preparation, but typically requires careful cancellation of light shifts in so-called magic traps. Here, we study a novel laser cooling scheme which overcomes such constraints, and applies when the ground state of a narrow cooling transition is trapped stronger than the excited state. We demonstrate our scheme, which exploits sequential addressing of red sideband transitions via frequency chirping of the cooling light, at the example of ^{88}Sr atoms and report ground-state populations compatible with recent experiments in magic tweezers. The scheme also induces light-assisted collisions, which are key to the assembly of large atom arrays. Our work enriches the toolbox for tweezer-based quantum technology, also enabling applications for tweezer-trapped molecules and ions that are incompatible with resolved sideband cooling conditions. |
| first_indexed | 2024-04-24T10:10:42Z |
| format | Article |
| id | doaj.art-6a5509bf51ad414690264e98e42d0813 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:10:42Z |
| publishDate | 2023-08-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-6a5509bf51ad414690264e98e42d08132024-04-12T17:33:07ZengAmerican Physical SocietyPhysical Review Research2643-15642023-08-015303309310.1103/PhysRevResearch.5.033093Motional ground-state cooling of single atoms in state-dependent optical tweezersC. HölzlA. GötzelmannM. WirthM. S. SafronovaS. WeberF. MeinertLaser cooling of single atoms in optical tweezers is a prerequisite for neutral atom quantum computing and simulation. Resolved sideband cooling comprises a well-established method for efficient motional ground-state preparation, but typically requires careful cancellation of light shifts in so-called magic traps. Here, we study a novel laser cooling scheme which overcomes such constraints, and applies when the ground state of a narrow cooling transition is trapped stronger than the excited state. We demonstrate our scheme, which exploits sequential addressing of red sideband transitions via frequency chirping of the cooling light, at the example of ^{88}Sr atoms and report ground-state populations compatible with recent experiments in magic tweezers. The scheme also induces light-assisted collisions, which are key to the assembly of large atom arrays. Our work enriches the toolbox for tweezer-based quantum technology, also enabling applications for tweezer-trapped molecules and ions that are incompatible with resolved sideband cooling conditions.http://doi.org/10.1103/PhysRevResearch.5.033093 |
| spellingShingle | C. Hölzl A. Götzelmann M. Wirth M. S. Safronova S. Weber F. Meinert Motional ground-state cooling of single atoms in state-dependent optical tweezers Physical Review Research |
| title | Motional ground-state cooling of single atoms in state-dependent optical tweezers |
| title_full | Motional ground-state cooling of single atoms in state-dependent optical tweezers |
| title_fullStr | Motional ground-state cooling of single atoms in state-dependent optical tweezers |
| title_full_unstemmed | Motional ground-state cooling of single atoms in state-dependent optical tweezers |
| title_short | Motional ground-state cooling of single atoms in state-dependent optical tweezers |
| title_sort | motional ground state cooling of single atoms in state dependent optical tweezers |
| url | http://doi.org/10.1103/PhysRevResearch.5.033093 |
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