Universal quantum gates between nitrogen-vacancy centers in a levitated nanodiamond

TL;DR

This paper proposes a method to implement universal quantum gates between NV centers in a levitated nanodiamond using magnetic field coupling, achieving high fidelity despite thermal noise, advancing quantum network capabilities.

Contribution

It introduces a novel scheme for high-fidelity quantum gates between NV centers in levitated nanodiamonds, tolerant to thermal noise and compatible with current experimental setups.

Findings

High-fidelity quantum gates are achievable with the proposed scheme.

The scheme is tolerant to thermal noise of the torsional mode.

Potential applications in quantum networks and distributed quantum computation.

Abstract

We propose a scheme to realize universal quantum gates between nitrogen-vacancy (NV) centers in an optically trapped nanodiamond, through uniform magnetic field induced coupling between the NV centers and the torsional mode of the levitated nanodiamond. The gates are tolerant to the thermal noise of the torsional mode. By combining the scheme with dynamical decoupling technology, it is found that the high fidelity quantum gates are possible for the present experimental conditions. The proposed scheme is useful for NV-center-based quantum network and distributed quantum computation