Photoionization of Rydberg Atoms in Optical Lattices
| Autor: | Georg Raithel, Jamie MacLennan, Ryan Cardman, Sarah E. Anderson, Yun-Jhih Chen |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
Quantum Physics Atomic Physics (physics.atom-ph) Computer Science::Information Retrieval General Physics and Astronomy FOS: Physical sciences Photoionization 01 natural sciences Potential energy Physics - Atomic Physics 010305 fluids & plasmas Characterization (materials science) symbols.namesake Optical control 0103 physical sciences Rydberg atom Rydberg formula symbols Physics::Atomic Physics Atomic physics 010306 general physics Spectroscopy Quantum Physics (quant-ph) |
| DOI: | 10.48550/arxiv.2102.09622 |
| Popis: | We develop a formalism for photoionization (PI) and potential energy curves (PECs) of Rydberg atoms in ponderomotive optical lattices and apply it to examples covering several regimes of the optical-lattice depth. The effect of lattice-induced PI on Rydberg-atom lifetime ranges from noticeable to highly dominant when compared with natural decay. The PI behavior is governed by the generally rapid decrease of the PI cross sections as a function of angular-momentum (ℓ), lattice-induced ℓ-mixing across the optical-lattice PECs, and interference of PI transition amplitudes from the lattice-mixed into free-electron states. In GHz-deep lattices, ℓ-mixing leads to a rich PEC structure, and the significant low-ℓ PI cross sections are distributed over many lattice-mixed Rydberg states. In lattices less than several tens-of-MHz deep, atoms on low-ℓ PECs are essentially ℓ-mixing-free and maintain large PI rates, while atoms on high-ℓ PECs trend towards being PI-free. Characterization of PI in GHz-deep Rydberg-atom lattices may be beneficial for optical control and quantum-state manipulation of Rydberg atoms, while data on PI in shallower lattices are potentially useful in high-precision spectroscopy and quantum-computing applications of lattice-confined Rydberg atoms. |
| Databáze: | OpenAIRE |
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