Accurate Determination of Blackbody Radiation Shifts in a Strontium Molecular Lattice Clock

Fuente: arXiv

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Bibliographic Details
Main Authors:	Iritani, B., Tiberi, E., Skomorowski, W., Moszynski, R., Borkowski, M., Zelevinsky, T.
Format:	Preprint
Published:	2023
Subjects:	Atomic Physics Atomic and Molecular Clusters Chemical Physics
Online Access:	Acceder al recurso
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_version_	1866910315182030848
author	Iritani, B. Tiberi, E. Skomorowski, W. Moszynski, R. Borkowski, M. Zelevinsky, T.
author_facet	Iritani, B. Tiberi, E. Skomorowski, W. Moszynski, R. Borkowski, M. Zelevinsky, T.
contents	Molecular lattice clocks enable the search for new physics, such as fifth forces or temporal variations of fundamental constants, in a manner complementary to atomic clocks. Blackbody radiation (BBR) is a major contributor to the systematic error budget of conventional atomic clocks and is notoriously difficult to characterize and control. Here, we combine infrared Stark-shift spectroscopy in a molecular lattice clock and modern quantum chemistry methods to characterize the polarizabilities of the Sr$_2$ molecule from dc to infrared. Using this description, we determine the static and dynamic blackbody radiation shifts for all possible vibrational clock transitions to the $10^{-16}$ level. This constitutes an important step towards mHz-level molecular spectroscopy in Sr$_2$, and provides a framework for evaluating BBR shifts in other homonuclear molecules.
format	Preprint
id	arxiv_https___arxiv_org_abs_2306_00981
institution	arXiv
publishDate	2023
record_format	arxiv
spellingShingle	Accurate Determination of Blackbody Radiation Shifts in a Strontium Molecular Lattice Clock Iritani, B. Tiberi, E. Skomorowski, W. Moszynski, R. Borkowski, M. Zelevinsky, T. Atomic Physics Atomic and Molecular Clusters Chemical Physics Molecular lattice clocks enable the search for new physics, such as fifth forces or temporal variations of fundamental constants, in a manner complementary to atomic clocks. Blackbody radiation (BBR) is a major contributor to the systematic error budget of conventional atomic clocks and is notoriously difficult to characterize and control. Here, we combine infrared Stark-shift spectroscopy in a molecular lattice clock and modern quantum chemistry methods to characterize the polarizabilities of the Sr$_2$ molecule from dc to infrared. Using this description, we determine the static and dynamic blackbody radiation shifts for all possible vibrational clock transitions to the $10^{-16}$ level. This constitutes an important step towards mHz-level molecular spectroscopy in Sr$_2$, and provides a framework for evaluating BBR shifts in other homonuclear molecules.
title	Accurate Determination of Blackbody Radiation Shifts in a Strontium Molecular Lattice Clock
topic	Atomic Physics Atomic and Molecular Clusters Chemical Physics
url	https://arxiv.org/abs/2306.00981