Strong zero-field Förster resonances in K-Rb Rydberg systems
We study resonant dipole-dipole coupling and the associated van der Waals energy shifts in Rydberg excited atomic rubidium and potassium and investigate Förster resonances between interspecies pair states. A comprehensive survey over experimentally accessible pair state combinations reveals multiple...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2020-09-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.033474 |
| _version_ | 1797211302131662848 |
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| author | J. Susanne Otto Niels Kjærgaard Amita B. Deb |
| author_facet | J. Susanne Otto Niels Kjærgaard Amita B. Deb |
| author_sort | J. Susanne Otto |
| collection | DOAJ |
| description | We study resonant dipole-dipole coupling and the associated van der Waals energy shifts in Rydberg excited atomic rubidium and potassium and investigate Förster resonances between interspecies pair states. A comprehensive survey over experimentally accessible pair state combinations reveals multiple candidates with small Förster defects. We crucially identify the existence of an ultrastrong, “low” electric field K-Rb Förster resonance with an extremely large zero-field crossover distance exceeding 100μm between the van der Waals regime and the resonant regime. This resonance allows for a strong interaction over a wide range of distances and by investigating its dependence on the strength and orientation of external fields we show this to be largely isotropic. As a result, the resonance offers a highly favorable setting for studying long-range resonant excitation transfer and entanglement generation between atomic ensembles in a flexible geometry. The two-species K-Rb system establishes a unique way of realizing a Rydberg single-photon optical transistor with a high input photon rate and we specifically investigate an experimental scheme with two separate ensembles. |
| first_indexed | 2024-04-24T10:24:19Z |
| format | Article |
| id | doaj.art-e6f10e5b705a4529b77db6c5a145f629 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:24:19Z |
| publishDate | 2020-09-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-e6f10e5b705a4529b77db6c5a145f6292024-04-12T17:01:08ZengAmerican Physical SocietyPhysical Review Research2643-15642020-09-012303347410.1103/PhysRevResearch.2.033474Strong zero-field Förster resonances in K-Rb Rydberg systemsJ. Susanne OttoNiels KjærgaardAmita B. DebWe study resonant dipole-dipole coupling and the associated van der Waals energy shifts in Rydberg excited atomic rubidium and potassium and investigate Förster resonances between interspecies pair states. A comprehensive survey over experimentally accessible pair state combinations reveals multiple candidates with small Förster defects. We crucially identify the existence of an ultrastrong, “low” electric field K-Rb Förster resonance with an extremely large zero-field crossover distance exceeding 100μm between the van der Waals regime and the resonant regime. This resonance allows for a strong interaction over a wide range of distances and by investigating its dependence on the strength and orientation of external fields we show this to be largely isotropic. As a result, the resonance offers a highly favorable setting for studying long-range resonant excitation transfer and entanglement generation between atomic ensembles in a flexible geometry. The two-species K-Rb system establishes a unique way of realizing a Rydberg single-photon optical transistor with a high input photon rate and we specifically investigate an experimental scheme with two separate ensembles.http://doi.org/10.1103/PhysRevResearch.2.033474 |
| spellingShingle | J. Susanne Otto Niels Kjærgaard Amita B. Deb Strong zero-field Förster resonances in K-Rb Rydberg systems Physical Review Research |
| title | Strong zero-field Förster resonances in K-Rb Rydberg systems |
| title_full | Strong zero-field Förster resonances in K-Rb Rydberg systems |
| title_fullStr | Strong zero-field Förster resonances in K-Rb Rydberg systems |
| title_full_unstemmed | Strong zero-field Förster resonances in K-Rb Rydberg systems |
| title_short | Strong zero-field Förster resonances in K-Rb Rydberg systems |
| title_sort | strong zero field forster resonances in k rb rydberg systems |
| url | http://doi.org/10.1103/PhysRevResearch.2.033474 |
| work_keys_str_mv | AT jsusanneotto strongzerofieldforsterresonancesinkrbrydbergsystems AT nielskjærgaard strongzerofieldforsterresonancesinkrbrydbergsystems AT amitabdeb strongzerofieldforsterresonancesinkrbrydbergsystems |