Hybrid sensors based on colour centres in diamond and piezoactive layers

Cai, Jianming; Jelezko, Fedor; Plenio, Martin B.

doi:10.1038/ncomms5065

Cited by 86 publications

(67 citation statements)

References 51 publications

(69 reference statements)

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“…For a NV center close to a Terfenol-D layer of thickness h ≫ λ c , we find g NV ≈ 400 kHz= ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi ffi A ½μm 2 p . Thus, as compared to direct strain coupling ≲200 Hz= ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi ffi A ½μm 2 p , the presence of the piezomagnetic layer is found to boost the single-phonon coupling strength by 3 orders of magnitude; this is in agreement with previous theoretical results for a static setting [34]. Typically, an IDT consists of two thin-film electrodes on a piezoelectric material, each formed by interdigitated fingers.…”

Section: Nv Centersupporting

confidence: 89%

“…For d ≪ λ c , a rough estimate shows that at least one component of η α NV is of order unity [34]. For a NV center close to a Terfenol-D layer of thickness h ≫ λ c , we find g NV ≈ 400 kHz= ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi ffi A ½μm 2 p .…”

Section: Nv Centermentioning

confidence: 77%

“…However, there are also piezomagnetic materials that exhibit a large magnetostrictive effect. In that case, elastic distortions are coupled to a (quasistatic) magnetic instead of an electric field [33,34]; for details, see Appendix D. For typical materials, such as Terfenol-D, the magnetic field associated with a single phonon can be estimated as B 0 ≈ ð2-6Þ μT= ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi ffi A ½μm 2 p . Finally, we note that composite structures comprising both piezoelectric and piezomagnetic materials can support magnetoelectric surface acoustic waves [35,36].…”

Section: A Saws In Quantum Regimementioning

confidence: 99%

See 2 more Smart Citations

Universal Quantum Transducers Based on Surface Acoustic Waves

et al. 2015

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We propose a universal, on-chip quantum transducer based on surface acoustic waves in piezoactive materials. Because of the intrinsic piezoelectric (and/or magnetostrictive) properties of the material, our approach provides a universal platform capable of coherently linking a broad array of qubits, including quantum dots, trapped ions, nitrogen-vacancy centers, or superconducting qubits. The quantized modes of surface acoustic waves lie in the gigahertz range and can be strongly confined close to the surface in phononic cavities and guided in acoustic waveguides. We show that this type of surface acoustic excitation can be utilized efficiently as a quantum bus, serving as an on-chip, mechanical cavity-QED equivalent of microwave photons and enabling long-range coupling of a wide range of qubits.

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Section: Nv Centersupporting

confidence: 89%

Section: Nv Centermentioning

confidence: 77%

Section: A Saws In Quantum Regimementioning

confidence: 99%

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Universal Quantum Transducers Based on Surface Acoustic Waves

et al. 2015

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“…The kind of application that a nanodiamond is suitable for depends on the type of color centers contained within it [2]. Nitrogen-vacancy (NV) color centers, for example, have been shown to be excellent biocompatible temperature sensors [3], highly sensitive magnetometers capable of extreme spatial resolutions [4], sensitive probes of electric fields [5], non-toxic fluorescent biomarkers [2], nano-scale nuclear magnetic resonance imaging (MRI) probes [6], and robust mechanical strain detectors [7]. NV color centers are also actively being developed as a key element of quantum information processing [8].…”

Section: Introductionmentioning

confidence: 99%

On investigation of optical and spin properties of NV centers in aggregates of detonation nanodiamonds

Bolshedvorskii

Vorobyov

Soshenko

et al. 2018

AIP Conference Proceedings

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Abstract. Quickly developing application of nitrogen-vacancy color centers in diamond sets demands on cheap and high optical and spin properties nanodiamonds. Among other types, detonation nanodiamonds are easiest for production but often show no NV color centers inside. In this work we show, that aggregates of detonation nanodiamonds could be as good, or even better in terms of brightness and spin properties, than more expensive single crystal nanodiamonds. This way aggregates of detonation nanodiamonds could efficiently serve as cheap and bright source of single photon radiation or sensitive element of biocompatible sensor.

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“…The importance of developing a technique suitable for such comparisons is growing, as the operation of electronic and optoelectronic devices relies more frequently on or is affected by individual atoms and local structure variations. For example, the electrical properties of modern transistors are often determined by single dopant atoms in their channels and individual nitrogen-vacancy centers in diamond are used for quantum sensors [8,9]. The identification and characterisation of similar defects are, hence, of great importance for the understanding and further improvement of the performance of both these systems and future optoelectronic devices.…”

mentioning

confidence: 99%

Quantitative Agreement between Electron-Optical Phase Images ofWSe2and Simulations Based on Electrostatic Potentials that Include Bonding Effects

et al. 2017

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The quantitative analysis of electron-optical phase images recorded using off-axis electron holography often relies on the use of computer simulations of electron propagation through a sample. However, simulations that make use of the independent atom approximation are known to overestimate experimental phase shifts by approximately 10%, as they neglect bonding effects. Here, we compare experimental and simulated phase images for few-layer WSe2. We show that a combination of pseudopotentials and all-electron density functional theory calculations can be used to obtain accurate mean electron phases, as well as improved atomic-resolution spatial distribution of the electron phase. The comparison demonstrates a perfect contrast match between experimental and simulated atomic-resolution phase images for a sample of precisely know thickness. The low computational cost of this approach makes it suitable for the analysis of large electronic systems, including defects, substitutional atoms and material interfaces.The complex wavefunction of electrons that have passed through a sample in the transmission electron microscope (TEM) can be reconstructed using the technique of off-axis electron holography. For a non-magnetic sample, the phase of the electron wavefunction is related to the three-dimensional electrostatic potential in the specimen and, in the absence of dynamical scattering, is proportional to the integral of the electrostatic potential in the electron beam direction [1]. As a result of the high spatial resolution of TEM, off-axis electron holography is therefore a powerful technique for the characterisation of local variations in electrostatic potential in functional materials at the nanoscale [2].In general, the conversion of a recorded phase image into a potential is non-trivial and often has to be supported by atomistic computer simulations [3]. An approach that is used frequently makes use of the independent atom approximation (IAA) and involves representing the crystal potential as a superposition of electrostatic potentials of individual isolated atoms [4]. As the effects of bonding are neglected, the results of simulations based on this approximation overestimate the mean phase of the electron wavefunction when compared to experimental measurements [5]. The accuracy of calculated mean electron phases has been shown to improve when using density functional theory (DFT) for the calculation of electrostatic potentials to take bonding effects into account [6,7]. However, to the best of our knowledge, no comparison between the DFTcalculated atomic-resolution spatial distribution of the electron phase and high-resolution electron holography experiments has been performed. The importance of developing a technique suitable for such comparisons is growing, as the operation of electronic and optoelectronic devices relies more frequently on or is affected by individual atoms and local structure variations. For example, the electrical properties of modern transistors are often determined by single dopant atoms in ...

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Hybrid sensors based on colour centres in diamond and piezoactive layers

Cited by 86 publications

References 51 publications

Universal Quantum Transducers Based on Surface Acoustic Waves

Universal Quantum Transducers Based on Surface Acoustic Waves

On investigation of optical and spin properties of NV centers in aggregates of detonation nanodiamonds

Quantitative Agreement between Electron-Optical Phase Images ofWSe2and Simulations Based on Electrostatic Potentials that Include Bonding Effects

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