Optical activation and detection of charge transport between individual colour centres in diamond

Lozovoi, Artur; Jayakumar, Harishankar; Daw, Damon; Vizkelethy, György; Bielejec, Edward S.; Doherty, Marcus W.; Meriles, Carlos A.

doi:10.1038/s41928-021-00656-z

Cited by 37 publications

(30 citation statements)

References 61 publications

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“…Author's note: During the preparation of this manuscript we became aware of complementary work in which charge transport and capture between two individual nitrogen vacancy centers in diamond was observed. 31,32 ■ ASSOCIATED CONTENT * sı Supporting Information…”

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confidence: 99%

Probing Charge Dynamics in Diamond with an Individual Color Center

et al. 2021

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Control over the charge states of color centers in solids is necessary to fully utilize them in quantum technologies. However, the microscopic charge dynamics of deep defects in wide-band-gap semiconductors are complex, and much remains unknown. We utilize a single-shot charge-state readout of an individual nitrogen-vacancy (NV) center to probe the charge dynamics of the surrounding defects in diamond. We show that the NV center charge state can be converted through the capture of holes produced by optical illumination of defects many micrometers away. With this method, we study the optical charge conversion of silicon-vacancy (SiV) centers and provide evidence that the dark state of the SiV center under optical illumination is SiV2–. These measurements illustrate that charge carrier generation, transport, and capture are important considerations in the design and implementation of quantum devices with color centers and provide a novel way to probe and control charge dynamics in diamond.

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confidence: 99%

Probing Charge Dynamics in Diamond with an Individual Color Center

et al. 2021

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“…Conversely, the positively charged NV + state is expected to be spinless, and is traditionally treated as a dark state since no optical signature has been observed thus far. 161 Proximity to surfaces can exacerbate dynamic or permanent switching to other charge states, 31 reducing the charge-state efficiency, defined asWhile the NV 0 state has garnered interest for super-resolution microscopy, 162–164 optical data storage, 166,167 quantum information processing, 165,168–170 and as an electrically driven single-photon source, 171 it contributes an undesirable background when probing NV − centers for magnetic sensing; therefore, ζ should be maximized. However, due to unavoidable charge-state cycling between NV − and NV 0 , the maximum achievable ζ is limited under normal measurement conditions.…”

Section: Surface Influence On Nv Center Stabilitymentioning

confidence: 99%

Diamond surface engineering for molecular sensing with nitrogen—vacancy centers

et al. 2022

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“…Experiments articulating local laser excitation of NVs followed by nonlocal fluorescence imaging reveal the formation of well-defined charge state patterns, whose response as a function of the excitation laser duration, intensity, and wavelength reveals valuable information on the dynamics of carrier transport and capture (13)(14)(15), including the formation of space charge potentials (16). Most recently, these ideas were extended to the limiting case where the free carrier source and/or target trap are formed by individual point defects (17,18), a geometry that can potentially be exploited to establish a quantum bus between remote qubits (19).…”

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confidence: 99%