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Published June 27, 2008 | public
Journal Article Open

Quantum State Engineering and Precision Metrology Using State-Insensitive Light Traps


Precision metrology and quantum measurement often demand that matter be prepared in well-defined quantum states for both internal and external degrees of freedom. Laser-cooled neutral atoms localized in a deeply confining optical potential satisfy this requirement. With an appropriate choice of wavelength and polarization for the optical trap, two electronic states of an atom can experience the same trapping potential, permitting coherent control of electronic transitions independent of the atomic center-of-mass motion. Here, we review a number of recent experiments that use this approach to investigate precision quantum metrology for optical atomic clocks and coherent control of optical interactions of single atoms and photons within the context of cavity quantum electrodynamics. We also provide a brief survey of promising prospects for future work.

Additional Information

© 2008 American Association for the Advancement of Science. Issue: 27 June 2008. We gratefully acknowledge C. J. Hood, K. Birnbaum, A. Boca, A. D. Boozer, J. Buck, J. McKeever, R. Miller, C. Nägerl, T. Northup, D. Stamper-Kurn, D. Vernooy, and D. Wilson of Caltech; S. Blatt, M. M. Boyd, G. K. Campbell, S. Foreman, C. Greene, J. L. Hall, T. Ido, T. Loftus, A. D. Ludlow, M. Martin, M. Miranda, J. Thomsen, and T. Zelevinsky of JILA; J. Bergquist, S. Diddams, T. Fortier, S. Jefferts, C. Oates, and T. Parker of the NIST Time and Frequency Division; and M. Takamoto of Tokyo and M. Imae and F.-L. Hong of NMIJ/AIST for their collaborations and discussions. The work at JILA is supported by NIST, NSF, Defense Advanced Research Projects Agency, and the Office of Naval Research. Work at Caltech is supported by NSF and Intelligence Advanced Research Projects Activity. Work at Tokyo is supported by Strategic Information and Communications R&D Promotion Programme and Core Research for Evolutional Science and Technology.

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August 19, 2023
August 19, 2023