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  • This JRP addresses the development of ultra-precise optical clocks using laser-cooled trapped ions. This will provide a leading European contribution to the realisation of a future SI second based on an optical frequency. The combination of laser cooling and ion trapping provides an ideal spectroscopic system that permits the observation of unperturbed atomic transition frequencies, thus providing the foundation for atomic clocks of the highest accuracy. The low level of perturbation that is achievable with these clocks has been the motivation for this research from the earliest proposals in the 1970ies and is exemplified by the recent as-yet unrivalled estimated uncertainty of 9x10-18 for the Al+ clock. The main limitation that is generally seen in the approach of the trapped-ion optical clock is the low signal to noise ratio that is limited by quantum noise in the state detection on a single atom.
  • This JRP addresses the development of ultra-precise optical clocks using laser-cooled trapped ions. This will provide a leading European contribution to the realisation of a future SI second based on an optical frequency. The combination of laser cooling and ion trapping provides an ideal spectroscopic system that permits the observation of unperturbed atomic transition frequencies, thus providing the foundation for atomic clocks of the highest accuracy. The low level of perturbation that is achievable with these clocks has been the motivation for this research from the earliest proposals in the 1970ies and is exemplified by the recent as-yet unrivalled estimated uncertainty of 9x10-18 for the Al+ clock. The main limitation that is generally seen in the approach of the trapped-ion optical clock is the low signal to noise ratio that is limited by quantum noise in the state detection on a single atom. (en)
Title
  • High-accuracy optical clocks with trapped ions
  • High-accuracy optical clocks with trapped ions (en)
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  • 7AX13011
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  • optical clock (en)
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