Temperature Dependence of the Nitrogen-Vacancy Magnetic Resonance in Diamond

Acosta, Víctor M.; Bauch, Erik; Ledbetter, Michael T.; Waxman, A.; Bouchard, Louis‐S.; Budker, Dmitry

doi:10.1103/physrevlett.104.070801

Cited by 589 publications

(510 citation statements)

References 34 publications

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“…For instance, the crossings of the eigenstate projections in Fig. 3b correspond to level anti-crossing conditions 37,39 , among which is the near-crossing between a j i and w j i at B100 mT (LAC À ) and the crossing between b j i and w j i at B105 mT (LAC þ ). They are caused by the S À I þ and S À I À hyperfine elements, respectively, near LAC at B102.5 mT.…”

Section: Resultsmentioning

confidence: 99%

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Sensitive magnetic control of ensemble nuclear spin hyperpolarization in diamond

et al. 2013

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Dynamic nuclear polarization, which transfers the spin polarization of electrons to nuclei, is routinely applied to enhance the sensitivity of nuclear magnetic resonance. This method is particularly useful when spin hyperpolarization can be produced and controlled optically or electrically. Here we show complete polarization of nuclei located near optically polarized nitrogen-vacancy centres in diamond. Close to the ground-state level anti-crossing condition of the nitrogen-vacancy electron spins, 13 C nuclei in the first shell are polarized in a pattern that depends sensitively upon the magnetic field. Based on the anisotropy of the hyperfine coupling and of the optical polarization mechanism, we predict and observe a reversal of the nuclear spin polarization with only a few millitesla change in the magnetic field. This method of magnetic control of high nuclear polarization at room temperature can be applied in sensitivity enhanced nuclear magnetic resonance of bulk nuclei, nuclear-based spintronics, and quantum computation in diamond.

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Section: Resultsmentioning

confidence: 99%

“…The relevant NV spin Hamiltonian, including its hyperfine interaction with 13 C a , is given by [38][39][40] :…”

Section: Resultsmentioning

confidence: 99%

Sensitive magnetic control of ensemble nuclear spin hyperpolarization in diamond

et al. 2013

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“…[129][130][131] Because the electronic levels of NVs are affected by temperature [132] and other external perturbations, NVs can be used to sense temperature, [133][134][135] electric fields, [136] pressure, [137] and mechanical motions. [138] Moreover, diamond is biocompatible and harmless, allowing for in-vivo quantum sensing in biology and medicine.…”

Section: Diamond Quantum Sensingmentioning

confidence: 99%

Isotope engineering of silicon and diamond for quantum computing and sensing applications

2014

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Some of the stable isotopes of silicon and carbon have zero nuclear spin, whereas many of the other elements that constitute semiconductors consist entirely of stable isotopes that have nuclear spins. Silicon and diamond crystals composed of nuclear-spin-free stable isotopes ( 28 Si, 30 Si, or 12 C) are considered to be ideal host matrixes to place spin quantum bits (qubits) for quantum-computing and -sensing applications, because their coherent properties are not disrupted thanks to the absence of host nuclear spins. The present paper describes the state-of-theart and future perspective of silicon and diamond isotope engineering for development of quantum information-processing devices.

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“…We chose NV centres as the optical emitters because of their outstanding characteristics in terms of robustness, stability, spinphoton coupling, ease of spin manipulation 19 and spin coherence, which have allowed them to play a fundamental role in new quantum technologies: room-temperature quantum registers based on the NV spin [20][21][22] , spin-spin entanglement 23,24 , spinphoton entanglement 25 and single-photon emitters 26 , among others. Besides quantum-information processing, NV centres have also been used in metrology applications as extremely sensitive nanoscale magnetometers 27,28 and thermometers [29][30][31] . These applications require high photon-collection efficiencies and therefore bulky collection optics.…”

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Ultrafast electronic readout of diamond nitrogen–vacancy centres coupled to graphene

et al. 2014

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Non-radiative transfer processes are often regarded as loss channels for an optical emitter 1 because they are inherently difficult to access experimentally. Recently, it has been shown that emitters, such as fluorophores and nitrogen-vacancy centres in diamond, can exhibit a strong non-radiative energy transfer to graphene [2][3][4][5][6] . So far, the energy of the transferred electronic excitations has been considered to be lost within the electron bath of the graphene. Here we demonstrate that the transferred excitations can be read out by detecting corresponding currents with a picosecond time resolution 7,8 . We detect electronically the spin of nitrogen-vacancy centres in diamond and control the non-radiative transfer to graphene by electron spin resonance. Our results open the avenue for incorporating nitrogen-vacancy centres into ultrafast electronic circuits and for harvesting non-radiative transfer processes electronically.With the advancement of nanoscale photonics research it has become increasingly desirable to combine optical systems with electric circuits to create optoelectronic devices that can be miniaturized and integrated into chips. To this end, we can take advantage of the excellent optical and electronic properties of graphene 9 , which include good photodetection capabilities 8,10-15 , efficient energy absorption 3 and strong light-matter interactions at the nanoscale 16,17 . In particular, it has been reported recently that, because of graphene's specific properties, the near-field interaction between light emitters and graphene is greatly enhanced as compared to that of conventional metals 2-6 . This interaction manifests itself, for example, in a 100-fold enhancement of the excited-state decay rate of emitters placed 5 nm away from graphene as compared to the spontaneous emission of the emitter. The physical mechanism behind the interaction is the creation of an electron-hole pair in graphene through non-radiative energy transfer (NRET) from the emitter dipole 18 . The NRET process to graphene has been demonstrated to have an efficiency of nearly 100% when the emitter is less than 10 nm away from the graphene sheet 3 , which makes graphene an ideal material to detect electronically the optical properties of nearby emitters 6 . NRET has been studied extensively for fundamental as well as for biosensing applications. However, a fast energy transfer has not yet been observed because of quenching of the optical signal for short graphene-emitter distances. In contrast, an electronic readout of the NRET enables studies on fast energy processes. Moreover, if the transferred energy can be collected, as we show in this work, new ways for energy harvesting and biosensing can be implemented.We take advantage of the highly efficient NRET process to read out electronically, for the first time, the optical excitation of nitrogen-vacancy (NV) centres in diamond nanocrystals. To this end, we used graphene for the extraction of the excited-state energy of NV centres and converted it into a measurable ...

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Temperature Dependence of the Nitrogen-Vacancy Magnetic Resonance in Diamond

Cited by 589 publications

References 34 publications

Sensitive magnetic control of ensemble nuclear spin hyperpolarization in diamond

Sensitive magnetic control of ensemble nuclear spin hyperpolarization in diamond

Isotope engineering of silicon and diamond for quantum computing and sensing applications

Ultrafast electronic readout of diamond nitrogen–vacancy centres coupled to graphene

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