03769nam a22006375i 4500 978-3-031-47647-1 DE-He213 20251030110901.0 cr nn 008mamaa 231228s2024 sz | s |||| 0|eng d 9783031476471 978-3-031-47647-1 10.1007/978-3-031-47647-1 doi QC170-197 PHM bicssc SCI074000 bisacsh PHM thema Leung, Kon H. author. aut http://id.loc.gov/vocabulary/relators/aut 68616 The Strontium Molecular Lattice Clock [electronic resource] : Vibrational Spectroscopy with Hertz-Level Accuracy / by Kon H. Leung. 1st ed. 2024. Cham : Springer Nature Switzerland : Imprint: Springer, 2024. XV, 161 p. 57 illus., 53 illus. in color. online resource. text txt rdacontent computer c rdamedia online resource cr rdacarrier text file PDF rda Springer Theses, Recognizing Outstanding Ph.D. Research, 2190-5061 Chapter 1: Introduction -- Chapter 2: Molecular structure and production of ultracold 88Sr2 in an optical lattice -- Chapter 3: Frequency comb assisted spectroscopy of the states -- Chapter 4: Ultracold 88Sr2 molecules in the absolute ground state -- Chapter 5: Terahertz vibrational molecular clock. 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. Atoms. 68249 Molecules. 68617 Metrology. 60464 Molecular spectroscopy. 68618 Lasers. 66078 Measurement. 67386 Measuring instruments. 67387 Quantum chemistry. 64531 Atoms and molecules in external fields. 68619 Metrology and Fundamental Constants. 68250 Molecular Spectroscopy. 68620 Laser. 8301 Measurement Science and Instrumentation. 67389 Quantum Chemistry. 64531 SpringerLink (Online service) Springer Nature eBook Printed edition: 9783031476464 Printed edition: 9783031476488 Printed edition: 9783031476495 Springer Theses, Recognizing Outstanding Ph.D. Research, 2190-5061 66370 https://doi.org/10.1007/978-3-031-47647-1 ZDB-2-PHA ZDB-2-SXP 56920 56920