Quantum Computation with Magnetic Clusters

TL;DR

This paper introduces a comprehensive quantum computing model using magnetic clusters with uniaxial anisotropy, satisfying key criteria and featuring a novel measurement scheme and entanglement method for implementing quantum gates.

Contribution

It presents a complete quantum computing system based on magnetic clusters, including a new measurement technique and a method for entangling qubits to realize C-NOT gates.

Findings

Proposes a quantum computing model with magnetic clusters fulfilling DiVincenzo criteria.

Introduces a novel measurement scheme based on current changes across the cluster.

Develops a new entanglement method for multi-qubit interactions and C-NOT gate implementation.

Abstract

We propose a complete, quantitative quantum computing system which satisfies the five DiVincenzo criteria. The model is based on magnetic clusters with uniaxial anisotropy, where standard, two-state qubits are formed utilizing the two lowest-lying states of an anisotropic potential energy. We outline the quantum dynamics required by quantum computing for single qubit structures, and then define a novel measurement scheme in which qubit sates can be measured by sharp changes in current as voltage across the cluster is varied. We then extend the single qubit description to multiple qubit interactions, facilitated specifically by a new entanglement method which propagates the controlled-NOT (C-NOT) quantum gate.