State-dependent interactions in ultracold $^{174}$Yb probed by optical clock spectroscopy

TL;DR

This paper uses high-precision optical clock spectroscopy to measure scattering properties and site occupancy of ultracold $^{174}$Yb atoms in a 3D optical lattice, providing insights for quantum technology applications.

Contribution

It introduces a novel spectroscopic method to resolve site occupancy and measure scattering lengths in ultracold $^{174}$Yb, advancing understanding of state-dependent interactions.

Findings

Measured scattering lengths for different collisional channels.

Resolved site occupancy in a Mott insulator with high precision.

Provided constraints for future quantum technology experiments.

Abstract

We report on the measurement of the scattering properties of ultracold $^{174}$Yb bosons in a three-dimensional (3D) optical lattice. Site occupancy in an atomic Mott insulator is resolved with high-precision spectroscopy on an ultranarrow optical clock transition. Scattering lengths and loss rate coefficients for $^{174}$Yb atoms in different collisional channels involving the ground state $^1$S$_0$ and the metastable $^3$P$_0$ are derived. These studies set important constraints for future experimental studies of two-electron atoms for quantum-technological applications.