High-precision spectroscopy of ultracold molecules in an optical lattice

TL;DR

This paper demonstrates high-precision spectroscopy and coherent control of ultracold $^{88}$Sr$_2$ molecules in an optical lattice, enabling accurate molecular measurements and insights into fundamental physics.

Contribution

It introduces a new method for precise molecular parameter measurement and coherent control in an optical lattice system.

Findings

Achieved microkelvin $^{88}$Sr$_2$ molecule imaging and spectroscopy.

Developed a bound-to-continuum spectroscopy technique for accurate binding energy measurement.

Discussed potential for exploring new physics with the system.

Abstract

The study of ultracold molecules tightly trapped in an optical lattice can expand the frontier of precision measurement and spectroscopy, and provide a deeper insight into molecular and fundamental physics. Here we create, probe, and image microkelvin $^{88}$Sr$_2$ molecules in a lattice, and demonstrate precise measurements of molecular parameters as well as coherent control of molecular quantum states using optical fields. We discuss the sensitivity of the system to dimensional effects, a new bound-to-continuum spectroscopy technique for highly accurate binding energy measurements, and prospects for new physics with this rich experimental system.