2009
DOI: 10.1103/physrevlett.102.063002
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Prospects for Optical Clocks with a Blue-Detuned Lattice

Abstract: We investigated the properties of optical lattice clocks operated with a repulsive light-shift potential. The magic wavelength, where light-shift perturbation for the clock transition cancels, was experimentally determined to be 389.889(9) nm for 87Sr. The hyperpolarizability effects on the clock transition were investigated theoretically. With minimal trapping field perturbation provided by the blue-detuned lattice, the fractional uncertainty due to the hyperpolarizability effects was found to be 2x10;{-19} i… Show more

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Cited by 54 publications
(48 citation statements)
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“…One of the noise sources is the trap fields intensity fluctuation; however, using the magic wavelength makes the atomic transition frequency independent of the trap laser intensity. Considering the variation of the Stark shifts due to the trap laser as a function of frequency at the magic wavelength [66], the relative scalar light shifts could be kept within 0.1mHz uncertainty by applying a trap laser with a 1MHz linewidth. In addition to the scalar light shift, the inhomogeneous polarization of trap fields in 3D optical lattices can result in an inhomogeneous tensor light shift [67]; however, the use of the bosonic isotope 88 Sr with zero magnetic moment cancels the tensor light shift [68] in our scheme.…”
Section: Testing Energy Decoherencementioning
confidence: 99%
“…One of the noise sources is the trap fields intensity fluctuation; however, using the magic wavelength makes the atomic transition frequency independent of the trap laser intensity. Considering the variation of the Stark shifts due to the trap laser as a function of frequency at the magic wavelength [66], the relative scalar light shifts could be kept within 0.1mHz uncertainty by applying a trap laser with a 1MHz linewidth. In addition to the scalar light shift, the inhomogeneous polarization of trap fields in 3D optical lattices can result in an inhomogeneous tensor light shift [67]; however, the use of the bosonic isotope 88 Sr with zero magnetic moment cancels the tensor light shift [68] in our scheme.…”
Section: Testing Energy Decoherencementioning
confidence: 99%
“…In view of recent advances in creating Bose-Einstein condensates (BEC) in alkaline-earthmetal (-like) species, such as Yb [32], 40 Ca [33], and 84 Sr [34,35], the Mott-insulator state [36] with a single atom in each lattice site that is made of BEC will allow attaining dense lattices to further improve clock stability. Moreover, in the 3D configuration, blue-detuned optical lattices [37] that reduce the higher-order light shift are applicable.…”
Section: A 3d Optical Latticementioning
confidence: 99%
“…Blue-detuned optical potentials are used in the manipulation of Rydberg states [183], atomic clocks [184], quantum information processing [185] or Bose-Einstein condensation in uniform potentials [186]. In the best ideal situation for blue-detuned optical traps, the local minimum where atoms are trapped has null intensity.…”
Section: Trapping Becs In a 3d Dark Focusmentioning
confidence: 99%