Quantitative study of the response of a single NV defect in diamond to magnetic noise

Rollo, Maxime; Finco, Aurore; Tanos, Rana; Fabre, F.; Devolder, T.; Robert-Philip, I.; Jacques, Vincent

doi:10.1103/physrevb.103.235418

Cited by 18 publications

(13 citation statements)

References 34 publications

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“…The reduced ESR contrast of the in-contact scan is consistent with the strong increase of the stray field generated by thermally excited spin waves ( Figure 2 b) that enhance the NV-spin relaxation rate 16 , 21 , 23 − 25 ( Supporting Information, Note 6 ) and lead to PL reduction. 26 , 27 The spatially homogeneous saturation indicates a large amplitude of the microwave-driven spin waves, as we will show in more detail below.…”

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confidence: 78%

Filtering and Imaging of Frequency-Degenerate Spin Waves Using Nanopositioning of a Single-Spin Sensor

et al. 2022

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Nitrogen-vacancy (NV) magnetometry is a new technique for imaging spin waves in magnetic materials. It detects spin waves by their microwave magnetic stray fields, which decay evanescently on the scale of the spin-wavelength. Here, we use nanoscale control of a single-NV sensor as a wavelength filter to characterize frequency-degenerate spin waves excited by a microstrip in a thin-film magnetic insulator. With the NV probe in contact with the magnet, we observe an incoherent mixture of thermal and microwave-driven spin waves. By retracting the tip, we progressively suppress the small-wavelength modes until a single coherent mode emerges from the mixture. In-contact scans at low drive power surprisingly show occupation of the entire isofrequency contour of the two-dimensional spin-wave dispersion despite our one-dimensional microstrip geometry. Our distance-tunable filter sheds light on the spin-wave band occupation under microwave excitation and opens opportunities for imaging magnon condensates and other coherent spin-wave modes.

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confidence: 78%

Filtering and Imaging of Frequency-Degenerate Spin Waves Using Nanopositioning of a Single-Spin Sensor

et al. 2022

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“…Indeed, surface spins may generate considerable magnetic noise through spin flips and precession, 217,218 leading to a reduction in NV-center T 1 and T 2 via dipole–dipole coupling. In both bulk materials 78,92,219–224 and nanodiamonds, 225–229 this magnetic noise may arise from surface nuclear spins, unpaired electrons in dangling bonds, surface adatoms, and molecular adsorbates. Moreover, spin-orbit interactions in sp 2 carbon, as well as potential biradical spin character or magnetization in mixed sp 2 /sp 3 material, may also contribute.…”

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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“…It allows probing the relaxation dynamics from an initialized pure state to a thermal equilibrium. Interesting for applications, the relaxation time, or T 1 , can sense the magnetic noise of the local environment 78,79 such as the one created by free radicals species in living cells 40 or by chemical reactions 80 .…”

Section: Pulse Sequencesmentioning

confidence: 99%

Optically detected magnetic resonance with an open source platform

Babashah¹,

Shirzad²,

Losero³

et al. 2022

Preprint

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Localized electronic spins in solid-state environments form versatile and robust platforms for quantum sensing, metrology and quantum information processing. With optically detected magnetic resonance (ODMR), it is possible to prepare and readout highly coherent spin systems, up to room temperature, with orders of magnitude enhanced sensitivities and spatial resolutions compared to induction-based techniques, allowing single spin manipulations. While ODMR was first observed in organic molecules, many other systems are nowadays intensively being searched for, discovered and studied. Among them is the nitrogen-vacany (NV) center in diamond. Beyond ODMR it is notably already widely and successfully used both as a high-resolution high-sensitivity quantum sensors for external fields and as a qubit. Others are rare earth ions used as quantum memories and many other color centers trapped in bulk or 2-dimensional materials. In order to allow the broadest possible community of researchers and engineers to investigate and develop novel ODMR-based materials and applications, we overview here the setting up of ODMR experiments using commercially available hardware. We also present in detail a dedicated collaborative open-source interface named Qudi and describe the original features we have added to speed-up data acquisition, relax instrumental requirements and widen its applicability to individual and ensemble ODMR systems. Associating hardware and software discussions, this article aims to steepen the learning curve of newcomers in ODMR from a variety of scientific backgrounds, to optimize the experimental development time, preempt the common measurement pitfalls, and to provide an efficient, portable and collaborative interface to explore innovative experiments.

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Quantitative study of the response of a single NV defect in diamond to magnetic noise

Cited by 18 publications

References 34 publications

Filtering and Imaging of Frequency-Degenerate Spin Waves Using Nanopositioning of a Single-Spin Sensor

Filtering and Imaging of Frequency-Degenerate Spin Waves Using Nanopositioning of a Single-Spin Sensor

Diamond surface engineering for molecular sensing with nitrogen—vacancy centers

Optically detected magnetic resonance with an open source platform

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