Systematic study of the 87 Sr clock transition in an optical lattice Andrew
نویسنده
چکیده
With ultracold Sr confined in a magic wavelength optical lattice, we present the most precise study (2.8 Hz statistical uncertainty) to-date of the 1S0 3P0 optical clock transition with a detailed analysis of systematic shifts (20 Hz uncertainty) in the absolute frequency measurement of 429 228 004 229 867 Hz. The high resolution permits an investigation of the optical lattice motional sideband structure. The local oscillator for this optical atomic clock is a stable diode laser with its Hz-level linewidth characterized across the optical spectrum using a femtosecond frequency comb.
منابع مشابه
The absolute frequency of the 87Sr optical clock transition
The absolute frequency of the S0–P0 clock transition of 87Sr has been measured to be 429 228 004 229 873.65 (37) Hz using lattice-confined atoms, where the fractional uncertainty of 8.6 × 10−16 represents one of the most accurate measurements of an atomic transition frequency to date. After a detailed study of systematic effects, which reduced the total systematic uncertainty of the Sr lattice ...
متن کاملar X iv : p hy si cs / 0 60 52 00 v 1 2 3 M ay 2 00 6 An accurate optical lattice clock with 87 Sr atoms
We report a frequency measurement of the 1S0− 3P0 transition of Sr atoms in an optical lattice clock. The frequency is determined to be 429 228 004 229 879 (5)Hz with a fractional uncertainty that is comparable to state-of-the-art optical clocks with neutral atoms in free fall. Two previous measurements of this transition were found to disagree by about 2× 10, i.e. almost four times the combine...
متن کاملSystematic study of the 87Srclock transition in an optical lattice.
With ultracold 87Srconfined in a magic wavelength optical lattice, we present the most precise study (2.8 Hz statistical uncertainty) to date of the 1S0-3P0 optical clock transition with a detailed analysis of systematic shifts (19 Hz uncertainty) in the absolute frequency measurement of 429 228 004 229 869 Hz. The high resolution permits an investigation of the optical lattice motional sideban...
متن کاملImproved Frequency Measurement of a One-Dimensional Optical Lattice Clock with a Spin-Polarized Fermionic Sr Isotope
We demonstrate a one-dimensional optical lattice clock with a spin-polarized fermionic isotope designed to realize a collision-shift-free atomic clock with neutral atom ensembles. To reduce systematic uncertainties, we developed both Zeeman shift and vector light-shift cancellation techniques. By introducing both an H-maser and a Global Positioning System (GPS) carrier phase link, the absolute ...
متن کاملPrecision measurement of fermionic collisions using an 87Sr optical lattice clock with 1 x 10(-16) inaccuracy.
We describe recent progress on the JILA Sr optical frequency standard, which has a systematic uncertainty at the 10(¿16) fractional frequency level. The dominant contributions to the systematic error are from blackbody radiation shifts and collisional shifts. We discuss the blackbody radiation shift and propose measurements and experimental protocols that should reduce its systematic contributi...
متن کامل