Scheme for implementing atomic multiport devices

TL;DR

This paper proposes a practical method to implement multiport devices for atoms in optical ring lattices, enabling advanced quantum measurements and precision gyroscopes, with analysis of practical limitations.

Contribution

It introduces a new straightforward approach for creating atomic multiport devices in optical ring lattices, expanding quantum interferometry capabilities.

Findings

Method enables multiport atomic devices in optical lattices

Practical limitations on device size are analyzed

Potential applications in quantum measurement and gyroscopes

Abstract

Multiport generalizations of beam splitters are the key component in multipath interferometers, which are important in a range of quantum state engineering and precision measurement schemes. Here we propose a straightforward method for implementing multiport devices for atoms trapped in optical ring lattices. These devices are interesting as atoms have certain properties (such as mass) that photons do not and the ring configuration makes them useful for applications such as precision gyroscopes. We discuss how they could be employed in useful measurement schemes and investigate how practical considerations limit the size of the devices that can be achieved by this method.