Spin waves and Collisional Frequency Shifts of a Trapped-Atom Clock

Abstract

We excite spin-waves with spatially inhomogeneous pulses and study the resulting frequency shifts of a chip-scale atomic clock of trapped ${}^{87}$Rb. The density-dependent frequency shifts of the hyperfine transition simulate the s-wave collisional frequency shifts of fermions, including those of optical lattice clocks. As the spin polarizations oscillate in the trap, the frequency shift reverses and it depends on the area of the second Ramsey pulse, exhibiting a predicted beyond mean-field frequency shift. Numerical and analytic models illustrate the observed behaviors.

arXiv commentWill appear soon in Physical Review Letters - Typos corrected

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Cited by in corpus (20)

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• Single-ion microwave near-field quantum sensor
• S-Wave Collisional Frequency Shift of a Fermion Clock
• Simulation of XXZ Spin Models using Sideband Transitions in Trapped Bosonic Gases
• Quantum engineering of atomic phase-shifts in optical clocks
• Cancellation of Collisional Frequency Shifts in Optical Lattice Clocks with Rabi Spectroscopy
• Dispersive probing of driven pseudo-spin dynamics in a gradient field
• Microwave-dressed state-selective potentials for atom interferometry
• Inductive dressed ring traps for ultracold atoms
• Fundamental limit of phase coherence in two-component Bose-Einstein condensates
• Beyond the Spin Model Approximation for Ramsey Spectroscopy
• Decomposed description of Ramsey spectra under atomic interactions
• Magic density in a self-rephasing ensemble of trapped ultracold atoms
• Effect of trap symmetry and atom-atom interactions on a trapped atom interferometer with internal state labelling
• Ensemble master equation for a trapped-atom clock with one- and two-body losses
• Spin Waves in Quantum Gases --- The Quality Factor of the Identical Spin Rotation Effect