We study the spatial periodicity effects on the differential light shift of noninteracting atoms in an optical lattice.Through the Rabi-spectrum approach,when the wavelength of the optical lattice is not magic,a reduc...We study the spatial periodicity effects on the differential light shift of noninteracting atoms in an optical lattice.Through the Rabi-spectrum approach,when the wavelength of the optical lattice is not magic,a reduction to the differential light shift is expected.The reduction results from the Bloch bands induced by the quantized motion in the periodic potential.Taking the microwave transition of rubidium atoms as an example,this reduction at some wavelengths can reach one order of magnitude,compared to the data without considering the spatial profile of the optical lattice.When the atomic temperature is considered,the differential light shift increases or decreases with temperature,depending on the wavelength of the lattice.Our results should be beneficial for microwave optical lattice clock and precision measurements.展开更多
基金Supported by the National Basic Research Program of China under Grant No 2011CB921501the National Natural Science Foundation of China under Grant Nos 61027016,61078026,10874008 and 10934010.
文摘We study the spatial periodicity effects on the differential light shift of noninteracting atoms in an optical lattice.Through the Rabi-spectrum approach,when the wavelength of the optical lattice is not magic,a reduction to the differential light shift is expected.The reduction results from the Bloch bands induced by the quantized motion in the periodic potential.Taking the microwave transition of rubidium atoms as an example,this reduction at some wavelengths can reach one order of magnitude,compared to the data without considering the spatial profile of the optical lattice.When the atomic temperature is considered,the differential light shift increases or decreases with temperature,depending on the wavelength of the lattice.Our results should be beneficial for microwave optical lattice clock and precision measurements.