Preserving universal resources for one-way quantum computing

TL;DR

This paper proposes a pulse sequence scheme to generate a Hamiltonian with a cluster state as its ground state, facilitating the preservation of universal resources for measurement-based quantum computing in solid-state systems.

Contribution

It introduces a novel method using pulse sequences to produce a Hamiltonian with a cluster state ground state, addressing preservation challenges in solid-state quantum systems.

Findings

Pulse sequences successfully generate the desired Hamiltonian.

The scheme enhances the stability of universal resource states.

Potential applications in quantum information processing.

Abstract

The common spin Hamiltonians such as the Ising, XY, or Heisenberg model do not have ground states that are the graph states needed in measurement-based quantum computation. Various highly-entangled many-body states have been suggested as a universal resource for this type of computation, however, it is not easy to preserve these states in solid-state systems due to their short coherence times. Here we propose a scheme for generating a Hamiltonian that has a cluster state as ground state. Our approach employs a series of pulse sequences inspired by established NMR techniques and holds promise for applications in many areas of quantum information processing.