Determination of local defect density in diamond by double electron-electron resonance

Li, Shang; Peng, Zaili; Kamiya, Mizuki; Niki, Tomoyuki; Stepanov, Viktor; Jarmola, Andrey; Shimizu, Yasuhiro; Takahashi, Susumu; Wickenbrock, Arne; Budker, Dmitry

doi:10.1103/physrevb.104.094307

Cited by 12 publications

(15 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Li et al recently used double electron–electron resonance (DEER) experiments to show that single crystal HPHT diamond samples (similar to those studied here) show significant spatial variations in their P1 concentrations. 72 One of the samples they studied was measured to have local P1 concentrations ranging from 13 to 322 ppm in different regions.…”

Section: Resultsmentioning

confidence: 99%

Large Room Temperature Bulk DNP of ¹³C via P1 Centers in Diamond

et al. 2022

View full text Add to dashboard Cite

We use microwave-induced dynamic nuclear polarization (DNP) of the substitutional nitrogen defects (P1 centers) in diamond to hyperpolarize bulk 13 C nuclei in both single crystal and powder samples at room temperature at 3.34 T. The large (>100-fold) enhancements demonstrated correspond to a greater than 10 000-fold improvement in terms of signal averaging of the 1% abundant 13 C spins. The DNP was performed using low-power solid state sources under static (nonspinning) conditions. The DNP spectrum (DNP enhancement as a function of microwave frequency) of diamond powder shows features that broadly correlate with the EPR spectrum. A well-defined negative Overhauser peak and two solid effect peaks are observed for the central ( m I = 0) manifold of the 14 N spins. Previous low temperature measurements in diamond had measured a positive Overhauser enhancement in this manifold. Frequency-chirped millimeter-wave excitation of the electron spins is seen to significantly improve the enhancements for the two outer nuclear spin manifolds ( m I = ±1) and to blur some of the sharper features associated with the central manifold. The outer lines are best fit using a combination of the cross effect and the truncated cross effect, which is known to mimic features of an Overhauser effect. Similar features are also observed in experiments on single crystal samples. The observation of all of these mechanisms in a single material system under the same experimental conditions is likely due to the significant heterogeneity of the high pressure, high temperature (HPHT) type Ib diamond samples used. Large room temperature DNP enhancements at fields above a few tesla enable spectroscopic studies with better chemical shift resolution under ambient conditions.

show abstract

Section: Resultsmentioning

confidence: 99%

Large Room Temperature Bulk DNP of ¹³C via P1 Centers in Diamond

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Li et al recently used double electron-electron resonance (DEER) experiments to show that single crystal HPHT diamond samples -similar to those studied here -show significant spatial variations in their P1 concentrations [71]. One of the samples they studied was measured to have local P1 concentrations ranging from 13 ppm to 322 ppm in different regions.…”

Section: Sample Heterogeneitymentioning

confidence: 67%

Large Room Temperature Bulk DNP of $^{13}$C via P1 Centers in Diamond

Shimon¹,

Cantwell²,

Joseph³

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

We use microwave-induced dynamic nuclear polarization (DNP) of the substitutional nitrogen defects (P1 centers) in diamond to hyperpolarize bulk 13 C nuclei in both single crystal and powder samples at room temperature at 3.34 T. The large (> 100-fold) enhancements demonstrated correspond to a greater than 10,000 fold improvement in terms of signal averaging of the 1% abundant 13 C spins. The DNP was performed using low-power solid state sources under static (non-spinning) conditions. The DNP spectrum (DNP enhancement as a function of microwave frequency) of diamond powder shows features that broadly correlate with the EPR spectrum. A well-defined negative Overhauser peak and two solid effect peaks are observed for the central (mI = 0) manifold of the 14 N spins. Previous low temperature measurements in diamond had measured a positive Overhauser enhancement in this manifold. Frequency-chirped millimeter-wave excitation of the electron spins is seen to significantly improve the enhancements for the two outer nuclear spin manifolds (mI = ±1) and to blur some of the sharper features associated with the central manifolds. The outer lines are best fit using a combination of the cross effect and a truncated cross effect -which is known to mimic features of an Overhauser effect. Similar features are also observed in experiments on single crystal samples. The observation of all of these mechanisms in a single material system under the same experimental conditions is likely due to the significant heterogeneity of the high pressure, high temperature (HPHT) type Ib diamond samples used. Large room temperature DNP enhancements at fields above a few Tesla enable spectroscopic studies with better chemical shift resolution under ambient conditions.

show abstract

“…NV centers in diamond have been one of the most promising solid-state platforms for quantum sensing, [5] with optical initialization and readout of the spin state, room-temperature operational condition, and nanoscale spatial resolution. Its capabilities of sensing electromagnetic signals, [18][19][20] temperature, [21] strain/stress, [22] spin density, [23] charge environment [24] have been demonstrated in recent years. To further improve the readout efficiency and perform simultaneous measurement of different spatial locations, wide-field quantum sensing techniques have also been developed, [10] where a microscope objective is used to map out the spatial information, and a camera with multiple pixels is used for imaging a large number of pixels.…”

Section: Sensor Setup Design With Flexible Control and Readout Optionsmentioning

confidence: 99%

Fast Wide‐Field Quantum Sensor Based on Solid‐State Spins Integrated with a SPAD Array

Wang

Madonini

et al. 2023

Adv Quantum Tech

View full text Add to dashboard Cite

Achieving fast, sensitive, and parallel measurement of a large number of quantum particles is an essential task in building large‐scale quantum platforms for different quantum information processing applications such as sensing, computation, simulation, and communication. Current quantum platforms in experimental atomic and optical physics based on CMOS sensors and charged coupled device cameras are limited by either low sensitivity or slow operational speed. Here an array of single‐photon avalanche diodes is integrated with solid‐state spin defects in diamond to build a fast wide‐field quantum sensor, achieving a frame rate up to 100 kHz. The design of the experimental setup to perform spatially resolved imaging of quantum systems is presented. A few exemplary applications, including sensing DC and AC magnetic fields, temperature, strain, local spin density, and charge dynamics, are experimentally demonstrated using a nitrogen‐vacancy ensemble diamond sample. The developed photon detection array is broadly applicable to other platforms such as atom arrays trapped in optical tweezers, optical lattices, donors in silicon, and rare earth ions in solids.

show abstract

Determination of local defect density in diamond by double electron-electron resonance

Cited by 12 publications

References 41 publications

Large Room Temperature Bulk DNP of ¹³C via P1 Centers in Diamond

Large Room Temperature Bulk DNP of ¹³C via P1 Centers in Diamond

Large Room Temperature Bulk DNP of $^{13}$C via P1 Centers in Diamond

Fast Wide‐Field Quantum Sensor Based on Solid‐State Spins Integrated with a SPAD Array

Contact Info

Product

Resources

About

Determination of local defect density in diamond by double electron-electron resonance

Cited by 12 publications

References 41 publications

Large Room Temperature Bulk DNP of 13C via P1 Centers in Diamond

Large Room Temperature Bulk DNP of 13C via P1 Centers in Diamond

Large Room Temperature Bulk DNP of $^{13}$C via P1 Centers in Diamond

Fast Wide‐Field Quantum Sensor Based on Solid‐State Spins Integrated with a SPAD Array

Contact Info

Product

Resources

About

Large Room Temperature Bulk DNP of ¹³C via P1 Centers in Diamond

Large Room Temperature Bulk DNP of ¹³C via P1 Centers in Diamond