Geometric entangling gates for coupled cavity system in decoherence-free subspaces

TL;DR

This paper presents a scheme for implementing geometric entangling gates in a coupled cavity system using decoherence-free subspaces, enabling scalable quantum computing with reduced individual atom addressing.

Contribution

It introduces a novel method for geometric entangling gates in coupled cavities that enhances scalability and minimizes the need for individual atom control.

Findings

Achieves geometric entangling gates via cavity coupling and laser control.

Supports scalable quantum computing architectures.

Reduces requirements for individual atom addressing.

Abstract

We propose a scheme to implement geometric entangling gates for two logical qubits in a coupled cavity system in decoherence-free subspaces. Each logical qubit is encoded with two atoms trapped in a single cavity and the geometric entangling gates are achieved by cavity coupling and controlling the external classical laser fields. Based on the coupled cavity system, the scheme allows the scalability for quantum computing and relaxes the requirement for individually addressing atoms.