High fidelity gate operations within the coupled nuclear and electron spins of a nitrogen vacancy center in diamond

TL;DR

This paper demonstrates high-fidelity quantum gate operations between electron and nuclear spins in a nitrogen-vacancy center in diamond, enabling advanced quantum information processing with current technology.

Contribution

It introduces experimentally feasible high-fidelity gate operations within coupled nuclear and electron spins of NV centers without complex pulse sequences.

Findings

High-fidelity electron and nuclear spin gates achieved.

Entangling gates demonstrated between electron and nuclear spins.

Potential for building graph states for quantum computing.

Abstract

In this article we investigate the dynamics of a single negatively charged nitrogen-vacancy center (NV-) coupled to the spin of the nucleus of a 15-nitrogen atom and show that high fidelity gate operations are possible without the need for complicated composite pulse sequences. These operations include both the electron and nuclear spin rotations, as well as an entangling gate between them. These are experimentally realizable gates with current technology of sufficiently high fidelities that they can be used to build graph states for quantum information processing tasks.