The Strontium Molecular Lattice Clock: Vibrational Spectroscopy with Hertz-Level Accuracy

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Kon H. Leung

The Strontium Molecular Lattice Clock

Vibrational Spectroscopy with Hertz-Level Accuracy

Kon H. Leung

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English

Springer International Publishing AG
03 January 2024

Scientific standards; Mensuration & systems of measurement; Atomic & molecular physics; Spectrum analysis, spectrochemistry, mass spectrometry

Series: Springer Theses

This thesis describes how the rich internal degrees of freedom of molecules can be exploited to construct the first “clock” based on ultracold molecules, rather than atoms. By holding the molecules in an optical lattice trap, the vibrational clock is engineered to have a high oscillation quality factor, facilitating the full characterization of frequency shifts affecting the clock at the hertz level. The prototypical vibrational molecular clock is shown to have a systematic fractional uncertainty at the 14th decimal place, matching the performance of the earliest optical atomic lattice clocks. As part of this effort, deeply bound strontium dimers are coherently created, and ultracold collisions of these Van der Waals molecules are studied for the first time, revealing inelastic losses at the universal rate. The thesis reports one of the most accurate measurements of a molecule’s vibrational transition frequency to date. The molecular clock lays the groundwork for explorations into terahertz metrology, quantum chemistry, and fundamental interactions at atomic length scales.

By: Kon H. Leung
Imprint: Springer International Publishing AG
Country of Publication: Switzerland
Edition: 2024 ed.
Dimensions: Height: 235mm, Width: 155mm,
Weight: 442g
ISBN: 9783031476464
ISBN 10: 3031476468
Series: Springer Theses
Pages: 161
Publication Date: 03 January 2024
Audience: Professional and scholarly , Undergraduate
Format: Hardback
Publisher's Status: Active

Kon H. Leung is an AWS-Quantum postdoctoral scholar at the California Institute of Technology. Leung is an Associate of the Royal College of Science, having earned a BSc in physics from Imperial College London. Leung received a PhD from Columbia University under the direction of Tanya Zelevinsky and was granted the Edward Prince Goldman Scholarship in Science.