Role of Coulomb antiblockade in the photoassociation of long-range Rydberg molecules. Peper, M., Trautmann, M., & Deiglmayr, J. Physical Review A, 107(1):012812, January, 2023. Publisher: American Physical Society![Role of Coulomb antiblockade in the photoassociation of long-range Rydberg molecules [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex 1 download We present a mechanism contributing to the detection of photoassociated long-range Rydberg molecules via pulsed-field ionization: ionic products, created by the decay of a long-range Rydberg molecule, modify the excitation spectrum of surrounding ground-state atoms and facilitate the excitation of further atoms into Rydberg states by the photoassociation light. Such an ion-mediated excitation mechanism has been previously called a Coulomb antiblockade. Pulsed-field ionization typically does not discriminate between the ionization of a long-range Rydberg molecule and an isolated Rydberg atom, and thus the number of atomic ions detected by this mechanism is not proportional to the number of long-range Rydberg molecules present in the probe volume. By combining high-resolution UV and rf spectroscopy of a dense, ultracold gas of cesium atoms, theoretical modeling of the molecular-level structures of long-range Rydberg molecules bound below n2P3/2 Rydberg states of cesium, and a rate model of the photoassociation and decay processes, we unambiguously identify the signatures of this detection mechanism in the photoassociation of long-range Rydberg molecules bound below atomic asymptotes with negative Stark shifts.
@article{peper_role_2023,
title = {Role of {Coulomb} antiblockade in the photoassociation of long-range {Rydberg} molecules},
volume = {107},
url = {https://link.aps.org/doi/10.1103/PhysRevA.107.012812},
doi = {10.1103/PhysRevA.107.012812},
abstract = {We present a mechanism contributing to the detection of photoassociated long-range Rydberg molecules via pulsed-field ionization: ionic products, created by the decay of a long-range Rydberg molecule, modify the excitation spectrum of surrounding ground-state atoms and facilitate the excitation of further atoms into Rydberg states by the photoassociation light. Such an ion-mediated excitation mechanism has been previously called a Coulomb antiblockade. Pulsed-field ionization typically does not discriminate between the ionization of a long-range Rydberg molecule and an isolated Rydberg atom, and thus the number of atomic ions detected by this mechanism is not proportional to the number of long-range Rydberg molecules present in the probe volume. By combining high-resolution UV and rf spectroscopy of a dense, ultracold gas of cesium atoms, theoretical modeling of the molecular-level structures of long-range Rydberg molecules bound below n2P3/2 Rydberg states of cesium, and a rate model of the photoassociation and decay processes, we unambiguously identify the signatures of this detection mechanism in the photoassociation of long-range Rydberg molecules bound below atomic asymptotes with negative Stark shifts.},
number = {1},
urldate = {2023-01-20},
journal = {Physical Review A},
author = {Peper, Michael and Trautmann, Martin and Deiglmayr, Johannes},
month = jan,
year = {2023},
note = {Publisher: American Physical Society},
keywords = {Ultracold Rydberg gases},
pages = {012812},
}
Downloads: 1
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