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报告内容
摘要
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Precision spectroscopy
is a driving force for the development of our physical understanding.
However, only few atomic and molecular systems of interest have been
accessible for precision spectroscopy in the past, since they miss a suitable
transition for laser cooling and internal state detection. This restriction
can be overcome in trapped ions through quantum logic spectroscopy. Coherent
laser manipulation originally developed in the context of quantum information
processing with trapped ions allow the combination of the special
spectroscopic properties of one ion species (spectroscopy ion) with the
excellent control over another species (logic or cooling ion). In my talk I
will present two different implementations of quantum logic spectroscopy: the
aluminium quantum logic optical clock as an example for spectroscopy of
narrow transitions, and precision spectroscopy of dipole-allowed transitions
in isotopes of Ca+ as an example for broad transitions. Applications of this
technique range from optical clocks for relativistic geodesy and tests of
relativity to the search of a variation of fundamental constants in the
laboratory and astronomical observations.
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