Enhancement of the creation yield of NV ensembles in a chemically vapour deposited diamond

Balasubramanian, Priyadharshini; Osterkamp, Christian; Brinza, Ovidiu; Rollo, Maxime; Robert-Philip, I.; Goldner, Philippe; Jacques, Vincent; Jelezko, Fedor; Achard, Jocelyn; Tallaire, Alexandre

doi:10.1016/j.carbon.2022.04.005

Cited by 15 publications

(7 citation statements)

References 47 publications

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“…The typical zero phonon lines (ZPL) observed at 575 and 637 nm were exclusively present in samples S1–S5 with N 2 addition from 0.2% to 1.5%; this is consistent with the Raman spectra depicted in Figure 3 , which corresponded to the neutral (N-V) 0 and negatively charged states (N-V) − of nitrogen vacancy centers. The presence of silicon vacancy (Si-V) centers at 737 nm [ 34 ] can be attributed to quartz windows etching exposed to high-heat plasma inside the CVD chamber [ 34 , 35 ]. It was observed that, for sample S1 with a nitrogen concentration of 0.2%, there was an insignificant Si-V center signal compared to sample S0 without any nitrogen addition, while no Si-V center signal could be detected for samples S2–S5.…”

Section: Resultsmentioning

confidence: 99%

Effect of Nitrogen on Growth and Optical Properties of Single-Crystal Diamond Synthesized by Chemical Vapor Deposition

Ren,

Lv,

et al. 2024

Materials

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Concurrently achieving high growth rate and high quality in single-crystal diamonds (SCDs) is significantly challenging. The growth rate of SCDs synthesized by microwave plasma chemical vapor deposition (MPCVD) was enhanced by introducing N2 into the typical CH4-H2 gas mixtures. The impact of nitrogen vacancy (NV) center concentration on growth rate, surface morphology, and lattice binding structure was investigated. The SCDs were characterized through Raman spectroscopy, photoluminescence (PL) spectroscopy, and X-ray photoelectron spectroscopy. It was found that the saturation growth rate was increased up to 45 μm/h by incorporating 0.8–1.2% N2 into the gas atmosphere, which is 4.5 times higher than the case without nitrogen addition. Nitrogen addition altered the growth mode from step–flow to bidimensional nucleation, leading to clustered steps and a rough surface morphology, followed by macroscopically pyramidal hillock formation. The elevation of nitrogen content results in a simultaneous escalation of internal stress and defects. XPS analysis confirmed chemical bonding between nitrogen and carbon, as well as non-diamond carbon phase formation at 0.8% of nitrogen doping. Furthermore, the emission intensity of NV-related defects from PL spectra changed synchronously with N2 concentrations (0–1.5%) during diamond growth, indicating that the formation of NV centers activated the diamond lattice and facilitated nitrogen incorporation into it, thereby accelerating chemical reaction rates for achieving high-growth-rate SCDs.

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Section: Resultsmentioning

confidence: 99%

Effect of Nitrogen on Growth and Optical Properties of Single-Crystal Diamond Synthesized by Chemical Vapor Deposition

Ren,

Lv,

et al. 2024

Materials

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“…[ 11,39 ] The splitting is caused by local electronic field of the measured NV − center, [ 39 ] which is closely related to the concentration and distribution of P1 centers in the diamond lattice. [ 40 ] For the 〈111〉‐grown sample‐IbD06 with nitrogen of ≈221 ppm, a large splitting of 13.4 ± 0.3 MHz was observed for the as‐grown NV − centers. This splitting decreased to 11.2 ± 0.3 MHz after HPHT treatment at 1500 °C, consistent with the physical picture of N aggregation under HPHT conditions.…”

Section: Resultsmentioning

confidence: 99%

Highly Coherent Nitrogen‐Vacancy Centers in Diamond via Rational High‐Pressure and High‐Temperature Synthesis and Treatment

Zhang,

Liu,

et al. 2023

Adv Funct Materials

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The high‐pressure and high‐temperature (HPHT) diamonds with well‐controlled defects and low stress offer an ideal host substrate for the fields of quantum information science; however, fabrication of quantum‐grade HPHT diamonds remains a pressing challenge. Here, a major advance in generating highly coherent nitrogen‐vacancy (NV) centers, a promising spin defect in diamonds, via tailored HPHT synthesis and postgrown annealing treatment is reported. The resulting well‐dispersed single NV− centers in type‐IIa diamonds exhibit long spin coherence times comparable to that of the reported chemical vapor deposition diamonds. Moreover, high‐density NV− ensembles in 〈100〉‐grown type‐Ib diamonds with superb zero‐phonon lines considerably sharper than those of native NV− centers in as‐grown diamonds, together with low splitting of resonances are produced. These findings demonstrate a superior synthesis and optimization protocol for creating high‐quality NV− centers avoiding lattice damage in diamond to meet the stringent requirements for a wide range of emerging quantum technologies.

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“…4 b was grown on a CVD diamond substrate along the (113) crystal orientation to facilitate Nitrogen incorporation and create NVs preferentially oriented along the NV axis lying closest to the growth plane 41 . A 15 μm thick layer containing NVs was obtained using 12 C and 15 N enriched gas mixture, which led to an estimated NV density of ~300 ppb and a P1-center density of ~0.1 ppm 53 .…”

Section: Methodsmentioning

confidence: 99%

All-optical nuclear quantum sensing using nitrogen-vacancy centers in diamond

et al. 2023

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Solid state spins have demonstrated significant potential in quantum sensing with applications including fundamental science, medical diagnostics and navigation. The quantum sensing schemes showing best performance under ambient conditions all utilize microwave or radio-frequency driving, which poses a significant limitation for miniaturization, energy efficiency, and non-invasiveness of quantum sensors. We overcome this limitation by demonstrating a purely optical approach to coherent quantum sensing. Our scheme involves the 15N nuclear spin of the Nitrogen-Vacancy (NV) center in diamond as a sensing resource, and exploits NV spin dynamics in oblique magnetic fields near the NV’s excited state level anti-crossing to optically pump the nuclear spin into a quantum superposition state. We demonstrate all-optical free-induction decay measurements—the key protocol for low-frequency quantum sensing—both on single spins and spin ensembles. Our results pave the way for highly compact quantum sensors to be employed for magnetometry or gyroscopy applications in challenging environments.

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Enhancement of the creation yield of NV ensembles in a chemically vapour deposited diamond

Cited by 15 publications

References 47 publications

Effect of Nitrogen on Growth and Optical Properties of Single-Crystal Diamond Synthesized by Chemical Vapor Deposition

Effect of Nitrogen on Growth and Optical Properties of Single-Crystal Diamond Synthesized by Chemical Vapor Deposition

Highly Coherent Nitrogen‐Vacancy Centers in Diamond via Rational High‐Pressure and High‐Temperature Synthesis and Treatment

All-optical nuclear quantum sensing using nitrogen-vacancy centers in diamond

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