The Sagnac Effect in Optical Lattices with Laser-Assisted Tunneling

TL;DR

This paper proposes a rotation sensing scheme using optical lattices with laser-assisted tunneling, demonstrating how spin-orbit coupling and cyclotron dynamics can enhance Sagnac phase detection with high sensitivity.

Contribution

It introduces a novel method for rotation sensing leveraging optical lattices and laser-assisted tunneling, highlighting the interplay of rotation and spin-orbit coupling.

Findings

Sagnac-type phase can be extracted from particle current beat-frequency.

Sensitivity to rotation can reach 7×10^-8 rad s^-1 Hz^1/2.

Spin-dependent response is governed by competition between rotation and spin-orbit coupling.

Abstract

We propose a scheme to realize the rotation sensing using optical lattices with laser-assisted tunneling. We demonstrate that the competition between the rotation and the spin-orbit coupling governs the spin-dependent response of the cyclotron dynamics of the spin-orbit coupled bosons. The Sagnac-type cumulative phase can be read out from the envelop of a beat-frequency particle current in the spin-balanced system and enhanced by the cyclotron motion. We also theoretically show that the sensitivity limit of the spin-orbit-coupled system to the rotational motion can reach 7*10^-8 rad s^-1 Hz^1/2.