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APS » Journals » Phys. Rev. Lett. » Volume 91 » Issue 17
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Phys. Rev. Lett. 91, 173005 (2003) [4 pages]

Ultrastable Optical Clock with Neutral Atoms in an Engineered Light Shift Trap

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Hidetoshi Katori* and Masao Takamoto
Engineering Research Institute, The University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan

V. G. Pal’chikov
Institute of Metrology for Time and Space at National Research Institute for Physical-Technical and Radiotechnical Measurements-IMVP VNIIFTRI, Mendeleevo, Moscow Region 141579, Russia

V. D. Ovsiannikov
Department of Physics, Voronezh State University, Voronezh 394006, Russia

Received 25 March 2003; published 24 October 2003

An ultrastable optical clock based on neutral atoms trapped in an optical lattice is proposed. Complete control over the light shift is achieved by employing the 5s2 1S0→5s5p 3P0 transition of 87Sr atoms as a “clock transition.” Calculations of ac multipole polarizabilities and dipole hyperpolarizabilities for the clock transition indicate that the contribution of the higher-order light shifts can be reduced to less than 1 mHz, allowing for a projected accuracy of better than 10-17.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.173005
DOI:
10.1103/PhysRevLett.91.173005
PACS:
32.80.Pj, 06.30.Ft, 31.15.Ar, 32.70.Cs

*Author to whom correspondence should be addressed.

Electronic address: katori@amo.t.u-tokyo.ac.jp

 
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