Large Scale Quantum Computation in an Anharmonic Linear Ion Trap

TL;DR

This paper proposes a scalable quantum computing architecture using a large linear ion chain in an anharmonic trap, enabling high-fidelity gates via coupling to transverse motional modes with simple laser pulses.

Contribution

It introduces a novel trap design that stabilizes large ion chains with uniform spacing, facilitating scalable quantum gates at Doppler temperatures.

Findings

High-fidelity quantum gates achieved in large ion chains.

Uniform ion spacing in anharmonic traps enables scalable quantum computing.

Effective coupling to a continuum of motional modes with simple laser pulses.

Abstract

We propose a large-scale quantum computer architecture by stabilizing a single large linear ion chain in a very simple trap geometry. By confining ions in an anharmonic linear trap with nearly uniform spacing between ions, we show that high-fidelity quantum gates can be realized in large linear ion crystals under the Doppler temperature based on coupling to a near-continuum of transverse motional modes with simple shaped laser pulses.