Long-lived circular Rydberg states of laser-cooled Rubidium atoms in a cryostat
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 \(100\,\mu\mathrm{s}\) by optical transitions and microwave blackbody radiation (BBR) induced transf...
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| creator | Cantat-Moltrecht, Tigrane Cortiñas, Rodrigo Ravon, Brice Méhaignerie, Paul Haroche, Serge Jean-Michel Raimond Favier, Maxime Brune, Michel Sayrin, Clément |
| description | 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 \(100\,\mu\mathrm{s}\) by optical transitions and microwave blackbody radiation (BBR) induced transfers at room temperature. A considerable improvement would be obtained with the few \(10\,\mathrm{ms}\) 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 \(3.7\,\mathrm{ms}\) 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 \((11\pm 2)\,\mathrm{K}\). The measured atomic coherence time (\(270\,\mu\mathrm{s}\)) is limited here only by technical magnetic field fluctuations. This work opens interesting perspectives for quantum simulation and sensing with cold circular Rydberg atoms. |
| doi_str_mv | 10.48550/arxiv.2002.02893 |
| format | Article |
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The lifetime of low-angular-momentum laser-accessible levels is however limited to a few \(100\,\mu\mathrm{s}\) by optical transitions and microwave blackbody radiation (BBR) induced transfers at room temperature. A considerable improvement would be obtained with the few \(10\,\mathrm{ms}\) 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 \(3.7\,\mathrm{ms}\) 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 \((11\pm 2)\,\mathrm{K}\). The measured atomic coherence time (\(270\,\mu\mathrm{s}\)) is limited here only by technical magnetic field fluctuations. 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The lifetime of low-angular-momentum laser-accessible levels is however limited to a few \(100\,\mu\mathrm{s}\) by optical transitions and microwave blackbody radiation (BBR) induced transfers at room temperature. A considerable improvement would be obtained with the few \(10\,\mathrm{ms}\) 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 \(3.7\,\mathrm{ms}\) 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 \((11\pm 2)\,\mathrm{K}\). The measured atomic coherence time (\(270\,\mu\mathrm{s}\)) is limited here only by technical magnetic field fluctuations. 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The lifetime of low-angular-momentum laser-accessible levels is however limited to a few \(100\,\mu\mathrm{s}\) by optical transitions and microwave blackbody radiation (BBR) induced transfers at room temperature. A considerable improvement would be obtained with the few \(10\,\mathrm{ms}\) 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 \(3.7\,\mathrm{ms}\) 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 \((11\pm 2)\,\mathrm{K}\). The measured atomic coherence time (\(270\,\mu\mathrm{s}\)) is limited here only by technical magnetic field fluctuations. 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| subjects | Angular momentum Black body radiation Circularity Helium Laser cooling Lasers Level (quantity) Physics - Atomic Physics Physics - Quantum Gases Physics - Quantum Physics Room temperature Rubidium Rydberg states Variation |
| title | Long-lived circular Rydberg states of laser-cooled Rubidium atoms in a cryostat |
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