Enhanced dual-beam excitation photoelectric detection of NV magnetic resonances in diamond

Abstract

The core issue for the implementation of the diamond NV centre qubits technology is the sensitive readout of NV spin state. We have recently demonstrated the photoelectric detection of NV magnetic resonances (PDMR), anticipated to be faster and more sensitive than optical detection (ODMR). Here we report on a PDMR contrast of 9 % - three times enhanced compared to previous work - on shallow N-implanted diamond. Based on ab-initio modelling, we demonstrate a novel one-photon ionization dual-beam PDMR protocol. We predict that this scheme is significantly less vulnerable to the influence of defects such as substitutional nitrogen.

arXiv comment12 pages, 3 figures

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• Room-temperature control and electrical readout of individual nitrogen-vacancy nuclear spins
• Photoionization of negatively charged NV centers in diamond: theory and ab initio calculations
• Pulsed photoelectric coherent manipulation and detection of NV centre spins in diamond
• \emph{Ab initio} spin-strain coupling parameters of divacancy qubits in silicon carbide
• Identification of nickel-vacancy defect in the photocurrent spectrum of diamond by means of \emph{ab initio} calculations
• Diamond Nitrogen-Vacancy Center Magnetometry: Advances and Challenges
• Photo-induced charge state dynamics of the neutral and negatively charged silicon vacancy centers in room-temperature diamond
• Wavelength dependence of nitrogen-vacancy center charge cycling
• Photoinduced charge injection from shallow point defects in diamond into water
• Robust quantification of the diamond nitrogen-vacancy center charge state via photoluminescence spectroscopy
• Efficient and all-carbon electrical readout of a NV based quantum sensor
• Finding the nitrogen-vacancy singlet manifold energy level using charge conversion pulse sequences
• Charge and Spin Dynamics and Destabilization of Shallow Nitrogen-Vacancy Centers under UV and Blue Excitation
• Magnetic-Field-Dependent Stimulated Emission from Nitrogen-Vacancy Centres in Diamond