Hyperfine-enhanced gyromagnetic ratio of a nuclear spin in diamond

Sangtawesin, Sorawis; McLellan, Claire A.; Myers, Bryan; Jayich, Ania; Awschalom, D. D.; Petta, J. R.

doi:10.1088/1367-2630/18/8/083016

Cited by 34 publications

(22 citation statements)

References 31 publications

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“…The measured Rabi frequency Ω m is related to its onresonance value by Ω m = √ Ω 2 + δ 2 , where δ is the detuning from the nuclear spin resonance frequency. We incorporate this unknown, small detuning in our model and fit the experimental data with the Rabi enhancement formulas (5)(6)(7). From the fit, we obtain an estimate of the transverse hyperfine coupling, A ⊥ = −2.62 ± 0.05 MHz, in good agreement with recently published values and with better precision than previously measured.…”

supporting

confidence: 81%

“…Here we show how to meet these two requirements by exploiting nominally forbidden transitions in a hybrid electronic-nuclear spin system associated with the Nitrogen-Vacancy center in diamond 3 . Specifically, we use second-order effects due to mixing of the electronic and nuclear spin states 4 in order to identify with high precision their coupling strength and to enhance the nuclear spin nutation rate 5 .…”

mentioning

confidence: 99%

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Measurement of transverse hyperfine interaction by forbidden transitions

2015

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Precise characterization of a system's Hamiltonian is crucial to its high-fidelity control that would enable many quantum technologies, ranging from quantum computation to communication and sensing. In particular, non-secular parts of the Hamiltonian are usually more difficult to characterize, even if they can give rise to subtle but non-negligible effects. Here we present a strategy for the precise estimation of the transverse hyperfine coupling between an electronic and a nuclear spin, exploiting effects due to forbidden transitions during the Rabi driving of the nuclear spin. We applied the method to precisely determine the transverse coupling between a Nitrogen-Vacancy center electronic spin and its Nitrogen nuclear spin. In addition, we show how this transverse hyperfine, that has been often neglected in experiments, is crucial to achieving large enhancements of the nuclear Rabi driving

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supporting

confidence: 81%

mentioning

confidence: 99%

Measurement of transverse hyperfine interaction by forbidden transitions

2015

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“…22 The m s = ±1 states move away from the zero magnetic field state at ±28.02 MHz mT −1 . 28 An applied microwave field, tuned to be resonant either with the m s = 0 ↔ +1 or m s = 0 ↔ −1 transition, will flip the spin state.…”

Section: Microwave Controlmentioning

confidence: 99%

Towards a test of quantum gravity with a levitated nanodiamond containing a spin

Wood,

Morley

2021

Preprint

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There is significant interest in potential experimental tests of macroscopic quantum effects, both to test potential modifications to quantum theory and to probe the quantum nature of gravity. A proposed platform with which to generate the required macroscopic quantum spatial superposition is a nanodiamond containing a negatively charged nitrogen vacancy (NV − ) centre. In this review, methods to fabricate nanodiamonds containing NV − suitable for these quantum applications are discussed. The proposed probes of the macroscopic limits of quantum theory are presented along with the spin physics of the NV − centre relevant to those tests.

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“…We choose a 13 C that is sufficiently close to the NV spin to allow for a coherent coupling, 16 yet distant enough to avoid significant hyperfine enhancement of the nuclear Rabi frequency. 34 Our pulse sequence, sketched in Fig. 5(a), consists of three steps: (i) polarization of the 13 C nuclear spin, (ii) nuclear Rabi pulse of variable duration t, and (iii) detection of the ⟨Iz⟩ projection via nuclear state tomography.…”

Section: Nuclear Rabi Rotationsmentioning

confidence: 99%

Broadband radio-frequency transmitter for fast nuclear spin control

Herb

Zopes

Cujia

et al. 2020

Review of Scientific Instruments

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The active manipulation of nuclear spins with radio-frequency (RF) coils is at the heart of nuclear magnetic resonance (NMR) spectroscopy and spin-based quantum devices. Here, we present a miniature RF transmitter designed to generate strong RF pulses over a broad bandwidth, allowing for fast spin rotations on arbitrary nuclear species. Our design incorporates (i) a planar multilayer geometry that generates a large field of 4.35 mT per unit current, (ii) a 50 Ω transmission circuit with a broad excitation bandwidth of ∼20 MHz, and (iii) an optimized thermal management leading to minimal heating at the sample location. Using individual 13 C nuclear spins in the vicinity of a diamond nitrogen-vacancy center as a test system, we demonstrate Rabi frequencies exceeding 70 kHz and nuclear π/2 rotations within 3.4 μs. The extrapolated values for 1 H spins are about 240 kHz and 1 μs, respectively. Beyond enabling fast nuclear spin manipulations, our transmitter system is ideally suited for the incorporation of advanced pulse sequences into micro-and nanoscale NMR detectors operating at a low (<1 T) magnetic field.

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Hyperfine-enhanced gyromagnetic ratio of a nuclear spin in diamond

Cited by 34 publications

References 31 publications

Measurement of transverse hyperfine interaction by forbidden transitions

Measurement of transverse hyperfine interaction by forbidden transitions

Towards a test of quantum gravity with a levitated nanodiamond containing a spin

Broadband radio-frequency transmitter for fast nuclear spin control

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