• DocumentCode
    1994830
  • Title

    Frequency metrology in quantum degenerate helium

  • Author

    van Rooij, R. ; Borbely, J.S. ; Simonet, J. ; Hoogerland, M.D. ; Eikema, K.S.E. ; Rozendaal, R.A. ; Vassen, W.

  • Author_Institution
    LaserLaB, Vrije Univ., Amsterdam, Netherlands
  • fYear
    2011
  • fDate
    Aug. 28 2011-Sept. 1 2011
  • Firstpage
    1082
  • Lastpage
    1083
  • Abstract
    We report the first direct observation and high precision measurement of the triplet to singlet transition between the metastable states of helium. We obtain a precision of 8×10-12, providing a stringent test of two-electron quantum electrodynamic theory and of nuclear few-body theory. We use either the 4He or the 3He isotope, and from the isotope shift derive a new value for the 3He charge radius.
  • Keywords
    frequency measurement; helium; metastable states; quantum electrodynamics; radiation pressure; 3He; 4He; frequency metrology; isotope shift; metastable states; nuclear few body theory; quantum degenerate helium; triplet to singlet transition; two electron quantum electrodynamic theory; Atomic beams; Atomic clocks; Frequency measurement; Helium; Laser beams; Laser transitions; Measurement by laser beam;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Quantum Electronics Conference & Lasers and Electro-Optics (CLEO/IQEC/PACIFIC RIM), 2011
  • Conference_Location
    Sydney, NSW
  • Print_ISBN
    978-1-4577-1939-4
  • Type

    conf

  • DOI
    10.1109/IQEC-CLEO.2011.6194159
  • Filename
    6194159
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1994830