Hyper-Ramsey Spectroscopy of Optical Clock Transitions

Details Hyper-Ramsey Spectroscopy of Optical Clock Transitions Hyper-Ramsey Spectroscopy of Optical Clock Transitions

2009-10-30

arxiv.org/abs/0910.5948v5

Physics

Atomic Physics

5 pages, 4 figures

Scientific paper

We present non-standard optical Ramsey schemes that use pulses individually tailored in duration, phase, and frequency to cancel spurious frequency shifts related to the excitation itself. In particular, the field shifts and their uncertainties of Ramsey fringes can be radically suppressed (by 2-4 orders of magnitude) in comparison with the usual Ramsey method (using two equal pulses) as well as with single-pulse Rabi spectroscopy. Atom interferometers and optical clocks based on two-photon transitions, heavily forbidden transitions, or magnetically induced spectroscopy could significantly benefit from this method. In the latter case these frequency shifts can be suppressed considerably below a fractional level of 10^{-17}. Moreover, our approach opens the door for the high-precision optical clocks based on direct frequency comb spectroscopy.

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