| Autor: |
T. Cantat-Moltrecht, R. Cortiñas, B. Ravon, P. Méhaignerie, S. Haroche, J. M. Raimond, M. Favier, M. Brune, C. Sayrin |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
Physical Review Research, Vol 2, Iss 2, p 022032 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
2643-1564 |
| DOI: |
10.1103/PhysRevResearch.2.022032 |
| Popis: |
The exquisite properties of Rydberg levels make them particularly appealing for emerging quantum technologies. The lifetime of low-angular-momentum laser-accessible levels is however limited to a few 100μs by optical transitions and microwave blackbody radiation (BBR) induced transfers at room temperature. A considerable improvement would be obtained with the few 10ms lifetime of circular Rydberg levels in a cryogenic environment reducing the BBR temperature. We demonstrate the preparation of long-lived circular Rydberg levels of laser-cooled rubidium atoms in a cryostat. We observe a 3.7ms lifetime for the circular level of principal quantum number n=52. By monitoring the transfers between adjacent circular levels, we estimate in situ the microwave BBR temperature to be (11±2)K. The measured atomic coherence time (270μs) is limited here only by technical magnetic field fluctuations. This work opens interesting perspectives for quantum simulation and sensing with cold circular Rydberg atoms. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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