Rabi spectroscopy and excitation inhomogeneity in a one-dimensional optical lattice clock

By S. Blatt, J. Thomsen, Gretchen K. Campbell, Andrew D. Ludlow, M. Swallows, Michael J. Martin, M. Boyd, Jun Ye. 2009

134 citations recorded by the source corpus.

We investigate the influence of atomic motion on precision Rabi spectroscopy of ultracold fermionic atoms confined in a deep one-dimensional optical lattice. We analyze the spectral components of longitudinal sideband spectra and present a model to extract information about the transverse motion and sample temperature from their structure. Rabi spectroscopy of the clock transition itself is also influenced by atomic motion in the weakly confined transverse directions of the optical lattice. By deriving Rabi flopping and Rabi line shapes of the carrier transition, we obtain a model to quantify trap-state-dependent excitation inhomogeneities. The inhomogeneously excited ultracold fermions become distinguishable, which allows $s$-wave collisions. We derive a detailed model of this process and explain observed density shift data in terms of a dynamic mean-field shift of the clock transition.

Subfields: Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/5bd29343f99685f8c5ccba1f29a5044ac6822ba5

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In Atomic and Molecular Physics, and Optics

1. Jun Ye
2. C. Regal
3. A. Young
4. M. Norcia
5. A. Kaufman

Citations in the corpus

• Microscopic Control and Detection of Ultracold Strontium in Optical-Tweezer Arrays (2018, background): “5 kHz linewidth amenable to fast but high-fidelity cooling given our degree of confinement [51].”
• Cooling a Single Atom in an Optical Tweezer to Its Quantum Ground State (2012, background): “The complete separation of the trapping and cooling beams [12,14,16] allows us to realize rapid cooling as well as low rates of atomic spontaneous emission due to the trapping light and hence long qubit coherence times.”
• JILA SrI optical lattice clock with uncertainty of 2.0×10−18 (2019, methodology): “The axial and radial mode occupation numbers are derived from carrier sideband asymmetry measurements, radial trapping frequencies, and transverse clock spectroscopy [49].”
• A strontium lattice clock with 3 × 10 − 17 ?> inaccuracy and its frequency (2013, methodology): “Although the atoms are very cold after the filtering procedure, their population distribution over the trap levels as observed in sideband spectroscopy needs to be considered when deriving the average lattice light intensity seen by the atoms [40].”
• Geodesy and metrology with a transportable optical clock (2017, unknown): “The lattice of the Yb clock is operated at ν l = 394,798.238 GHz with a trap depth U 0 = 196(4) E r ( E r being the lattice recoil energy) and an atomic temperature of 7(3) µ K as determined by sideband spectroscopy 32 .”