A scalable, high-speed measurement-based quantum computer using trapped ions

TL;DR

This paper proposes a scalable, high-speed measurement-based quantum computing architecture using trapped ions, enabling fast operations through parallelized measurements and a 3D cluster state on a 2D ion trap array.

Contribution

It introduces a novel scheme for implementing a fault-tolerant 3D cluster state with trapped ions, utilizing multi-photon photoionization for rapid measurements.

Findings

Feasible implementation of a 3D cluster state on 2D ion traps.

Proposal of nanosecond ion measurement via multi-photon photoionization.

Discussion of scheme viability for calcium ions.

Abstract

We describe a scalable, high-speed, and robust architecture for measurement-based quantum-computing with trapped ions. Measurement-based architectures offer a way to speed-up operation of a quantum computer significantly by parallelizing the slow entangling operations and transferring the speed requirement to fast measurement of qubits. We show that a 3D cluster state suitable for fault-tolerant measurement-based quantum computing can be implemented on a 2D array of ion traps. We propose the projective measurement of ions via multi-photon photoionization for nanosecond operation and discuss the viability of such a scheme for Ca ions.