03355nam a22005535i 4500001001800000003000900018005001700027007001500044008004100059020001800100024003500118050001400153072001600167072002300183072001500206100007500221245013900296250001800435264006900453300006400522336002600586337002600612338003600638347002400674490007200698505030500770520110001075650001102175650001502186650001502201650002802216650001202244650001702256650002702273650002302300650004402323650004102367650002802408650001102436650004502447650002302492710003402515773002602549776003602575776003602611776003602647830007202683856004602755978-3-031-47647-1DE-He21320251030110901.0cr nn 008mamaa231228s2024    sz |    s    |||| 0|eng d  a97830314764717 a10.1007/978-3-031-47647-12doi 4aQC170-197 7aPHM2bicssc 7aSCI0740002bisacsh 7aPHM2thema1 aLeung, Kon H.eauthor.4aut4http://id.loc.gov/vocabulary/relators/aut14aThe Strontium Molecular Lattice Clockh[electronic resource] :bVibrational Spectroscopy with Hertz-Level Accuracy /cby Kon H. Leung.  a1st ed. 2024. 1aCham :bSpringer Nature Switzerland :bImprint: Springer,c2024.  aXV, 161 p. 57 illus., 53 illus. in color.bonline resource.  atextbtxt2rdacontent  acomputerbc2rdamedia  aonline resourcebcr2rdacarrier  atext filebPDF2rda1 aSpringer Theses, Recognizing Outstanding Ph.D. Research,x2190-50610 aChapter 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.  aThis 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. 0aAtoms. 0aMolecules. 0aMetrology. 0aMolecular spectroscopy. 0aLasers. 0aMeasurement. 0aMeasuring instruments. 0aQuantum chemistry.14aAtoms and molecules in external fields.24aMetrology and Fundamental Constants.24aMolecular Spectroscopy.24aLaser.24aMeasurement Science and Instrumentation.24aQuantum Chemistry.2 aSpringerLink (Online service)0 tSpringer Nature eBook08iPrinted edition:z978303147646408iPrinted edition:z978303147648808iPrinted edition:z9783031476495 0aSpringer Theses, Recognizing Outstanding Ph.D. Research,x2190-506140uhttps://doi.org/10.1007/978-3-031-47647-1