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Conference on Lasers and Electro-Optics

Enhanced Quantum Sensing with Nitrogen-Vacancy Centers in Nanodiamonds Using All-Optical Charge Control

David A. Hopper, Richard R. Grote, Lee C. Bassett

Published Jan 1, 2017• 0 citations
Publisher

Abstract

We demonstrate an all-optical protocol for ensemble charge readout and spin-to-charge conversion of nitrogen-vacancy centers in room-temperature nanodiamonds. This technique provides drastic improvements for electrochemical sensing and an order-of-magnitude speedup for spin-based quantum sensors.
DOI
10.1364/cleo_qels.2017.ftu1e.2

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The color centers in diamonds are promising candidates in the context of quantum information science, quantum computation, and spin-based quantum sensors due to their exceptional spin-dependent emission properties. The manipulation and the optical readout of the spin state is measured using a spectroscopic technique known as the Optically Detected Magnetic Resonance (ODMR). Here, we discuss the indigenous development of an ODMR setup to manipulate and measure the spin state of nitrogen-vacancy centers in diamond. The study involves the confocal mapping of NV centers to measure the spin state by applying a micro-wave field. The spin state control appears as a dip in the measured emission intensity as a function of micro-wave frequency.