Nitrogen-vacancy center in diamond: Model of the electronic structure and associated dynamics

Manson, Neil B.; Harrison, Joanne; Sellars, Matthew

doi:10.1103/physrevb.74.104303

Cited by 584 publications

(667 citation statements)

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“…They have the smallest particle size among different kinds of synthetic diamonds, typically in the range of $10 nm, and exhibit outstanding mechanical, optical, electrical, and thermal properties [1]. This makes DNDs promising in a diversity of areas of science and technology, ranging from the 'conventional' applications such as abrasives, cutting and polishing tools [2,3], to the 'cutting-edge' ones -drug delivery, biomedical imaging, non-toxic contrast agents [4][5][6][7], magnetic sensors [8], composites [9,10], and quantum computing [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

On the relation between chemical composition and optical properties of detonation nanodiamonds

Kirmani

Peng

Mahfouz

et al. 2015

Carbon

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a b s t r a c tThe morphology and presence of impurities strongly influence mechanical, optical, electrical, and thermal properties of detonation nanodiamonds (DNDs). Here we report insights on the chemical composition and its effect on the optical properties of the DNDs obtained by rate-zonal density gradient ultracentrifugation. Herein, for the first time, a detailed valence band structure of as-prepared and oxidized DNDs is reported. Photoemission spectroscopy (PES) measurements demonstrate that the defects, originating from fullerene-like C bonding in the sp 2 shells of the DNDs, are governing the literature-reported loss of the emission spectral features arising from the nitrogen-vacancy (NV) center excitations. X-ray photoelectron spectroscopy (XPS) measurements reveal that nitrogen is present in the DNDs in the form of N-O bonded species located at the surface region/sp 2 shells, while in core of the DND it is in the form of N-C/N@C species.

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Section: Introductionmentioning

confidence: 99%

On the relation between chemical composition and optical properties of detonation nanodiamonds

Kirmani

Peng

Mahfouz

et al. 2015

Carbon

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“…Also, the average photon emission rate is substantially smaller for transitions involving the m S = ±1 levels than for the m S = 0 level 18 , which allows readout of the spin state by the photoluminescence intensity I P L . These two effects have been attributed to spin-dependent intersystem crossing from the 3 E state to a nearby singlet ( 1 A) state 16,19,20 .We study five different single N-V centers in a singlecrystal high-temperature high-pressure (type Ib) dia- …”

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confidence: 99%

Room-temperature manipulation and decoherence of a single spin in diamond

2006

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We report on room-temperature coherent manipulation of the spin of a single nitrogen-vacancy center in diamond and a study of its coherence as a function of magnetic field. We use magnetic resonance to induce Rabi nutations, and apply a Hahn spin echo to remove the effect of low-frequency dephasing. A sharp rise in the decoherence rate is observed at magnetic fields where the nitrogenvacancy center spin couples resonantly to substitutional nitrogen spins via the magnetic dipolar coupling. Finally, we find evidence that away from these energy resonances spin flips of nitrogen electrons are the main source of decoherence.PACS numbers: 76.30. Mi,03.67.Lx,03.65.Yz The study of single quantum systems is interesting both for testing fundamental laws of physics as well as for practical purposes, as computing with quantum systems promises an enormous increase in computing power and quantum communication allows secure information exchange 1 . In the solid state, coherent control of single quantum systems has been achieved in a number of systems, e.g. superconducting Cooper pair boxes 2 and electron spins in quantum dots 3 . Among these, the nitrogenvacancy (N-V) center in diamond 4 is unique, because its spin exhibits a long coherence time that persists up to room-temperature 5 , whereas most other systems only allow coherent control at cryogenic temperatures.Coherent manipulation of N-V centers on large ensembles was first achieved many years ago 6,7 . Recently, however, coherent rotations and spin echoes of a single N-V center spin were reported by Jelezko et al. 8 . This landmark experiment, that has not been reproduced by a different group thus far, demonstrates that the N-V center provides a testbed for quantum manipulation in the solid state at room temperature 9,10 . On the other hand, single-center spectroscopy allows the study of the local environment of the N-V center 11 and has already unveiled anisotropic spin interactions and magnetic dipolar coupling to spins of other defects in diamond 12 . Recent results of these studies include the observation of strong coupling between a single N-V center and the spin of a single substitutional nitrogen atom 13,14 and the measurement of the spin relaxation time of a single nitrogen electron spin 14 . By combining single-center spectroscopy with coherent control, the coherent interaction of the N-V center spin with its environment can be probed, which might ultimately lead to coherent quantum circuits 9 .Here, we report coherent control of the electron spin state of a single N-V center at room temperature. We demonstrate that we can coherently drive single-spin rotations (Rabi nutations) and undo low-frequency dephasing by application of a Hahn spin echo sequence. We use this capability to study the coherence of the N-V center as a function of applied magnetic field. By comparing the magnetic-field dependences of the decoherence rate and the photoluminescence, we find that the coherence of the N-V center spin is strongly affected by the resonant spin exchange with the...

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“…This NV − center ground state consists of six electrons (an additional one having been acquired from the lattice) and the m s = 0 level has a zero-field splitting of D = 2.88 GHz into a singlet and doublet [11]. A more detailed picture of the experimental difficulties associated with the identification of the nature of the ground state transitions of the two NV charged states are given in [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

The Decoherence of the Electron Spin and Meta-Stability of 13C Nuclear Spins in Diamond

Crompton

2011

Entropy

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Following the recent successful experimental manipulation of entangled 13 C atoms on the surface of Diamond, we calculate the decoherence of the electron spin in Nitrogen Vacancy NV centers of Diamond via a nonperturbative treatment of the time-dependent Greens function of a Central-Spin model in order to identify the Replica Symmetry Breaking mechanism associated with intersystem mixing between the m s = 0 sublevel of the 3 A 2 and 1 A 1 states of the NV − centers, which we identify as mediated via the meta-stability of 13 C nuclei bath processes in our calculations. Rather than the standard exciton-based calculation scheme used for quantum dots, we argue that a new scheme is needed to formally treat the Replica Symmetry Breaking of the 3 A 2 → 3 E excitations of the NV − centers, which we define by extending the existing Generalized Master Equation formalism via the use of fractional time derivatives. Our calculations allow us to accurately quantify the dangerously irrelevant scaling associated with the Replica Symmetry Breaking and provide an explanation for the experimentally observed room temperature stability of Diamond for Quantum Computing applications.

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Nitrogen-vacancy center in diamond: Model of the electronic structure and associated dynamics

Cited by 584 publications

References 46 publications

On the relation between chemical composition and optical properties of detonation nanodiamonds

On the relation between chemical composition and optical properties of detonation nanodiamonds

Room-temperature manipulation and decoherence of a single spin in diamond

The Decoherence of the Electron Spin and Meta-Stability of 13C Nuclear Spins in Diamond

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