Robust Detection of High-Frequency Signals at the Nanoscale

TL;DR

This paper introduces a robust quantum detection protocol using shortcuts to adiabaticity, enabling high-frequency signal detection at the nanoscale with minimized errors, applicable to various quantum sensors.

Contribution

The paper develops a novel protocol that enhances quantum detection of high-frequency signals by tailoring control fields to improve robustness and applicability across different quantum sensors.

Findings

Effective coupling of sensors with high-frequency signals

Minimized errors in quantum detection process

Applicable to multiple quantum sensor platforms

Abstract

We present a method relying on shortcuts to adiabaticity to achieve quantum detection of high frequency signals at the nanoscale in a robust manner. More specifically, our protocol delivers tailored amplitudes and frequencies for control fields that, firstly, enable the coupling of the sensor with high-frequency signals and, secondly, minimise errors that would otherwise spoil the detection process. To exemplify the method, we particularise to detection of signals emitted by fast-rotating nuclear spins with nitrogen vacancy center quantum sensors. However, our protocol is straightforwardly applicable to other quantum devices such as silicon vacancy centers, germanium vacancy centers, or divacancies in silicon carbide.