Photoionization of Rydberg Atoms in Optical Lattices
- URL: http://arxiv.org/abs/2102.09622v2
- Date: Tue, 6 Jul 2021 13:44:11 GMT
- Title: Photoionization of Rydberg Atoms in Optical Lattices
- Authors: Ryan Cardman, Jamie MacLennan, Sarah E. Anderson, Yun-Jhih Chen, Georg
Raithel
- Abstract summary: We develop a formalism for photoionization (PI) and potential energy curves (PECs) of Rydberg atoms in ponderomotive optical lattices.
The effect of lattice-induced PI on Rydberg-atom lifetime ranges from noticeable to highly dominant when compared with natural decay.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: 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 ($\ell$), and by lattice-induced $\ell$-mixing across the
optical-lattice PECs. In GHz-deep lattices, $\ell$-mixing leads to a rich PEC
structure, and the significant low-$\ell$ PI cross sections are distributed
over many lattice-mixed Rydberg states. In lattices less than several
tens-of-MHz deep, atoms on low-$\ell$ PECs are essentially $\ell$-mixing-free
and maintain large PI cross sections, while atoms on high-$\ell$ 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.
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