Related papers: P1 center electron spin clusters are prevalent in type Ib diamond

P1 center electron spin clusters are prevalent in type Ib diamond

URL: http://arxiv.org/abs/2311.05396v1
Date: Thu, 9 Nov 2023 14:26:33 GMT
Title: P1 center electron spin clusters are prevalent in type Ib diamond
Authors: Santiago Bussandri, Daphna Shimon, Asif Equbal, Yuhang Ren, Susumu Takahashi, Chandrasekhar Ramanathan, Songi Han
Abstract summary: We use dynamic nuclear polarization (DNP) and pulsed electron paramagnetic resonance (EPR) techniques to study P1 centers. P1 centers serve as a polarization source for DNP quantum sensing and play a significant role in the relaxation of NV centers. We propose that room temperature $13$C DNP at high field, achievable through straightforward modifications to existing solution-state NMR systems, is a potent tool for evaluating and controlling diamond defects.
Score: 0.18531599702807572
License: http://creativecommons.org/licenses/by-nc-sa/4.0/
Abstract: Understanding the spatial distribution of P1 centers is crucial for diamond-based sensors and quantum devices. P1 centers serve as a polarization source for DNP quantum sensing and play a significant role in the relaxation of NV centers. Additionally, the distribution of NV centers correlates with the distribution of P1 centers, as NV centers are formed through the conversion of P1 centers. We utilized dynamic nuclear polarization (DNP) and pulsed electron paramagnetic resonance (EPR) techniques that revealed strong clustering of a significant population of P1 centers that exhibit exchange coupling and produce asymmetric lineshapes. The $^{13}$C DNP frequency profile at high magnetic field revealed a pattern that requires an asymmetric EPR lineshape of the P1 clusters with electron-electron (e-e) coupling strengths exceeding the $^{13}$C nuclear Larmor frequency. EPR and DNP characterization at high magnetic fields was necessary to resolve energy contributions from different e-e couplings. We employed a two-frequency pump-probe pulsed Electron Double Resonance (ELDOR) technique to show crosstalk between the isolated and clustered P1 centers. This finding implies that the clustered P1 centers affect all P1 populations. Direct observation of clustered P1 centers and their asymmetric lineshape is a novel and crucial insight into understanding magnetic noise sources for quantum information applications of diamonds and for designing diamond-based polarizing agents with optimized DNP efficiency for $^{13}$C and other nuclear spins of analytes. We propose that room temperature $^{13}$C DNP at high field, achievable through straightforward modifications to existing solution-state NMR systems, is a potent tool for evaluating and controlling diamond defects.

Related papers

Characterizing the magnetic noise power spectrum of dark spins in diamond [0.0]
We measure the magnetic noise power spectra for ensembles of P1 centers in diamond that typically form the bath for NV (nitrogen-vacancy) centers. All power spectra show two distinct features, a broad component that is observed to scale as approximately $1/omega0.7-1.0$, and a prominent peak at the $13$C Larmor frequency.
arXiv Detail & Related papers (2023-12-19T22:39:07Z)
Observing coherence in an incoherent paramagnetic nitrogen spin bath [0.0]
We use nitrogen-vacancy centers in diamond to measure the coherence of paramagnetic nitrogen defects (P1 centers) We detect coherent interactions between the P1 centers and a local bath of $13$C nuclear spins. Our work illustrates how the optically-dark P1 spins, despite being unpolarized, can be used to extract information from their local environment.
arXiv Detail & Related papers (2023-11-30T01:52:59Z)
Hyperpolarisation of nuclear spins: polarisation blockade [0.0]
pulse-based protocols have been shown to efficiently transfer optically induced polarisation of the electron defect spin to surrounding nuclear spins. We find that whenever polarisation resonances of nuclear spins are near-degenerate with a blocking' spin, which is single spin with stronger off-diagonal coupling to the electronic central spin, they are displaced out of the central resonant region.
arXiv Detail & Related papers (2023-09-07T15:02:54Z)
Spin decoherence in VOPc@graphene nanoribbon complexes [5.691318972818067]
Carbon nanoribbon or nanographene qubit arrays can facilitate quantum-to-quantum transduction between light, charge, and spin. We study spin decoherence due to coupling with a surrounding nuclear spin bath of an electronic molecular spin of a vanadyl phthalocyanine (VOPc) molecule integrated on an armchair-edged graphene nanoribbon (GNR) We find that the decoherence time $T$ is anisotropic with respect to magnetic field orientation and determined only by nuclear spins on VOPc and GNR.
arXiv Detail & Related papers (2023-07-31T04:55:05Z)
Control of an environmental spin defect beyond the coherence limit of a central spin [79.16635054977068]
We present a scalable approach to increase the size of electronic-spin registers. We experimentally realize this approach to demonstrate the detection and coherent control of an unknown electronic spin outside the coherence limit of a central NV. Our work paves the way for engineering larger quantum spin registers with the potential to advance nanoscale sensing, enable correlated noise spectroscopy for error correction, and facilitate the realization of spin-chain quantum wires for quantum communication.
arXiv Detail & Related papers (2023-06-29T17:55:16Z)
Simulating Spin-Orbit Coupling With Quasidegenerate N-Electron Valence Perturbation Theory [77.34726150561087]
We present the first implementation of spin-orbit coupling effects in SO-QDNEVPT2. The accuracy of these methods is tested for the group 14 and 16 hydrides, 3d and 4d transition metal ions, and two actinide dioxides.
arXiv Detail & Related papers (2022-11-11T20:03:37Z)
Rapidly enhanced spin polarization injection in an optically pumped spin ratchet [49.1301457567913]
We report on a strategy to boost the spin injection rate by exploiting electrons that can be rapidly polarized. We demonstrate this in a model system of Nitrogen Vacancy center electrons injecting polarization into a bath of 13C nuclei in diamond. Through a spin-ratchet polarization transfer mechanism, we show boosts in spin injection rates by over two orders of magnitude.
arXiv Detail & Related papers (2021-12-14T08:23:10Z)
Anisotropic electron-nuclear interactions in a rotating quantum spin bath [55.41644538483948]
Spin-bath interactions are strongly anisotropic, and rapid physical rotation has long been used in solid-state nuclear magnetic resonance. We show that the interaction between electron spins of nitrogen-vacancy centers and a bath of $13$C nuclear spins introduces decoherence into the system. Our findings offer new insights into the use of physical rotation for quantum control with implications for quantum systems having motional and rotational degrees of freedom that are not fixed.
arXiv Detail & Related papers (2021-05-16T06:15:00Z)
Controlled coherent dynamics of [VO(TPP)], a prototype molecular nuclear qudit with an electronic ancilla [50.002949299918136]
We show that [VO(TPP)] (vanadyl tetraphenylporphyrinate) is a promising system suitable to implement quantum computation algorithms. It embeds an electronic spin 1/2 coupled through hyperfine interaction to a nuclear spin 7/2, both characterized by remarkable coherence.
arXiv Detail & Related papers (2021-03-15T21:38:41Z)
A multiconfigurational study of the negatively charged nitrogen-vacancy center in diamond [55.58269472099399]
Deep defects in wide band gap semiconductors have emerged as leading qubit candidates for realizing quantum sensing and information applications. Here we show that unlike single-particle treatments, the multiconfigurational quantum chemistry methods, traditionally reserved for atoms/molecules, accurately describe the many-body characteristics of the electronic states of these defect centers.
arXiv Detail & Related papers (2020-08-24T01:49:54Z)
Resolving single molecule structures with nitrogen-vacancy centers in diamond [0.8192907805418583]
We present theoretical proposals for two-dimensional nuclear magnetic resonance spectroscopy protocols based on Nitrogen-vacancy (NV) centers in diamond. We employ a singular value thresholding matrix completion algorithm to further reduce the amount of data required to permit the identification of key features in the spectra of strongly sub-sampled data.
arXiv Detail & Related papers (2014-07-23T15:27:52Z)

This list is automatically generated from the titles and abstracts of the papers in this site.