Recoil-free Quantum Gates with Optical Qubits

TL;DR

This paper introduces a recoil-free optical pulse scheme for quantum gates with trapped atoms and ions, significantly reducing recoil effects and enabling high-fidelity quantum computing with over 1000 gates.

Contribution

It presents a novel recoil-free pulse method that enhances fidelity limits and supports scalable quantum computing with optical qubits.

Findings

Photon recoil suppressed by three orders of magnitude

Fidelity of optical qubits approaches fundamental limits

Supports realization of over 1000 high-fidelity quantum gates

Abstract

We propose a scheme to perform optical pulses that suppress the effect of photon recoil by three orders of magnitude compared to ordinary pulses in the Lamb-Dicke regime. We derive analytical insight about the fundamental limits to the fidelity of optical qubits for trapped atoms and ions. This paves the way towards applications in quantum computing for realizing $>1000$ of gates with an overall fidelity above 99\%.