The Strontium Molecular Lattice Clock

Vibrational Spectroscopy with Hertz-Level Accuracy
1. Auflage 2024
ISBN: 978-3-031-47646-4
Verlag: Springer Nature Switzerland

Buch, Englisch, 161 Seiten, Format (B × H): 160 mm x 241 mm, Gewicht: 442 g

Reihe: 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.

Zielgruppe

Research

Autoren/Hrsg.

Leung, Kon H.

Fachgebiete

• Technische Wissenschaften Technik Allgemein Technische Optik, Lasertechnologie
• Naturwissenschaften Chemie Physikalische Chemie Quantenchemie, Theoretische Chemie
• Technische Wissenschaften Technik Allgemein Mess- und Automatisierungstechnik
• Naturwissenschaften Physik Elektromagnetismus Quantenoptik, Nichtlineare Optik, Laserphysik
• Naturwissenschaften Physik Quantenphysik Atom- und Molekülphysik

Inhaltsverzeichnis

Chapter 1: Introduction.- Chapter 2: Molecular structure and production of ultracold Sr in an optical lattice.- Chapter 3: Frequency comb assisted spectroscopy of the states.- Chapter 4: Ultracold Sr molecules in the absolute ground state.- Chapter 5: Terahertz vibrational molecular clock.

Über Autor(innen)

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.