Matter-wave interferometers using TAAP rings

TL;DR

This paper introduces two innovative matter-wave Sagnac interferometers utilizing ring-shaped TAAPs, demonstrating independent spin-state manipulation and potential for precise rotation sensing.

Contribution

The paper presents the first implementation of matter-wave interferometers using ring-shaped TAAPs with independent spin-state control.

Findings

Successful experimental demonstration of spin-state manipulation in ring-shaped TAAPs

Implementation of two different interferometer configurations

Analysis of phase corrections in Sagnac interferometry

Abstract

We present two novel matter-wave Sagnac interferometers based on ring- shaped time-averaged adiabatic potentials (TAAP). For both the atoms are put into a superposition of two different spin states and manipulated independently using elliptically polarized rf-fields. In the first interferometer the atoms are accelerated by spin-state-dependent forces and then travel around the ring in a matter-wave guide. In the second one the atoms are fully trapped during the entire interferometric sequence and are moved around the ring in two spin-state-dependent "buckets". Corrections to the ideal Sagnac phase are investigated for both cases. We experimentally demonstrate the key atom-optical elements of the interferometer such as the independent manipulation of two different spin states in the ring-shaped potentials under identical experimental conditions.