Nuclear quantum-assisted magnetometer

Thomas Haeberle, Thomas Oeckinghaus, Dominik Schmid-Lorch, Matthias Pfender, Felipe Favaro de Oliveira, Seyed Ali Momenzadeh, Amit Finkler, Jorg Wrachtrup

Research output: Contribution to journalArticlepeer-review

Abstract

Magnetic sensing and imaging instruments are important tools in biological and material sciences. There is an increasing demand for attaining higher sensitivity and spatial resolution, with implementations using a single qubit offering potential improvements in both directions. In this article we describe a scanning magnetometer based on the nitrogen-vacancy center in diamond as the sensor. By means of a quantum-assisted readout scheme together with advances in photon collection efficiency, our device exhibits an enhancement in signal to noise ratio of close to an order of magnitude compared to the standard fluorescence readout of the nitrogen-vacancy center. This is demonstrated by comparing non-assisted and assisted methods in a T1 relaxation time measurement.

Original languageEnglish
Article number013702
Number of pages9
JournalReview of Scientific Instruments
Volume88
Issue number1
DOIs
StatePublished - 1 Jan 2017
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Instrumentation

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