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Performance of a 229 Thorium solid-state nuclear clock | G. A. Kazakov
; A. N. Litvinov
; V. I. Romanenko
; L. P. Yatsenko
; A. V. Romanenko
; M. Schreitl
; G. Winkler
; T. Schumm
; | Date: |
15 Apr 2012 | Abstract: | The 7.8 eV nuclear isomer transition in 229 Thorium has been suggested as an
etalon transition in a new type of optical frequency standard. Here we discuss
the construction of a "solid-state nuclear clock" from Thorium nuclei implanted
into single crystals transparent in the vacuum ultraviolet range. We
investigate crystal-induced line shifts and broadening effects for the specific
system of Calcium fluoride. At liquid Nitrogen temperatures, the clock
performance will be limited by decoherence due to magnetic coupling of the
Thorium nucleus to neighboring nuclear moments, ruling out the commonly used
Rabi or Ramsey interrogation schemes. We propose a clock stabilization based on
counting of flourescence photons and present optimized operation parameters.
Taking advantage of the high number of quantum oscillators under continuous
interrogation, a fractional instability level of 10^{-19} might be reached
within the solid-state approach. | Source: | arXiv, 1204.3268 | Services: | Forum | Review | PDF | Favorites |
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