Optical cycling in polyatomic molecules with complex hyperfine structure

We have developed and demonstrated a scheme to achieve rotationally-closed photon cycling in polyatomic molecules with complex hyperfine structure and sensitivity to hadronic symmetry violation, specifically \(^{171}\)YbOH and \(^{173}\)YbOH. We calculate rotational branching ratios for spontaneous...

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Bibliographic Details
Published in:arXiv.org 2023-04
Main Authors: Zeng, Yi, Jadbabaie, Arian, Patel, Ashay N, Phelan, Yu, Steimle, Timothy C, Hutzler, Nicholas R
Format: Article
Language:English
Subjects:
Cycles
Hyperfine structure
Laser cooling
Modulators
Molecular beams
Molecular structure
Optical pumping
Photon beams
Photons
Polyatomic molecules
Vibrational states
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Summary:We have developed and demonstrated a scheme to achieve rotationally-closed photon cycling in polyatomic molecules with complex hyperfine structure and sensitivity to hadronic symmetry violation, specifically \(^{171}\)YbOH and \(^{173}\)YbOH. We calculate rotational branching ratios for spontaneous decay and identify repumping schemes which use electro-optical modulators (EOMs) to address the hyperfine structure. We demonstrate our scheme by cycling photons in a molecular beam and verify that we have achieved rotationally-closed cycling by measuring optical pumping into unaddressed vibrational states. Our work makes progress along the path toward utilizing photon cycling for state preparation, readout, and laser cooling in precision measurements of polyatomic molecules with complex hyperfine structure.
ISSN:2331-8422
DOI:10.48550/arxiv.2304.14548