Tommey, JDR;
Hogan, SD;
(2019)
Resonant Rydberg-atom-microwave-field interactions in the ultrastrong-driving regime: Beyond the rotating-wave approximation.
Physical Review A
, 100
(5)
, Article 053417. 10.1103/PhysRevA.100.053417.
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Abstract
The coherent interaction of Rydberg atoms with microwave fields in the ultrastrong-driving regime, in which the Rabi frequency is of the same order of magnitude as the transition frequency, has been studied for states with principal quantum number n=105 in helium. Experiments were performed in pulsed supersonic beams, and the effects of the ultrastrong 1.280 GHz microwave driving field, tuned to near resonance with the 1s105sS13→1s105pP3 transition, were identified from Autler-Townes splittings of the 1s3pP23→1s105sS13 transition by cw laser spectroscopy. The microwave field strength was calibrated in situ in the apparatus from Autler-Townes splittings measured in the weak-driving regime in which the rotating-wave approximation holds. The results of the experiments were compared to the energy-level structure of the atoms in the presence of the microwave field calculated using Floquet methods. From this comparison, the microwave-field strengths for which the rotating-wave approximation and the two-level approximation break down have been identified. The feasibility of implementing microwave traps for Rydberg atoms and molecules, which operate in the ultrastrong-driving regime, has been evaluated.
| Type: | Article |
|---|---|
| Title: | Resonant Rydberg-atom-microwave-field interactions in the ultrastrong-driving regime: Beyond the rotating-wave approximation |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevA.100.053417 |
| Publisher version: | https://doi.org/10.1103/PhysRevA.100.053417 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10087705 |
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