03826nam 22007575 450 991079921700332120231228062520.03-031-47647-610.1007/978-3-031-47647-1(CKB)29476472900041(DE-He213)978-3-031-47647-1(MiAaPQ)EBC31046024(Au-PeEL)EBL31046024(EXLCZ)992947647290004120231228d2024 u| 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierThe Strontium Molecular Lattice Clock[electronic resource] Vibrational Spectroscopy with Hertz-Level Accuracy /by Kon H. Leung1st ed. 2024.Cham :Springer Nature Switzerland :Imprint: Springer,2024.1 online resource (XV, 161 p. 57 illus., 53 illus. in color.) Springer Theses, Recognizing Outstanding Ph.D. Research,2190-50619783031476464 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.Springer Theses, Recognizing Outstanding Ph.D. Research,2190-5061AtomsMoleculesMetrologyMolecular spectroscopyLasersMeasurementMeasuring instrumentsQuantum chemistryAtoms and molecules in external fieldsMetrology and Fundamental ConstantsMolecular SpectroscopyLaserMeasurement Science and InstrumentationQuantum ChemistryAtoms.Molecules.Metrology.Molecular spectroscopy.Lasers.Measurement.Measuring instruments.Quantum chemistry.Atoms and molecules in external fields.Metrology and Fundamental Constants.Molecular Spectroscopy.Laser.Measurement Science and Instrumentation.Quantum Chemistry.539Leung Kon Hauthttp://id.loc.gov/vocabulary/relators/aut1586291MiAaPQMiAaPQMiAaPQBOOK9910799217003321The Strontium Molecular Lattice Clock3872634UNINA