Scalable Fabrication of High Purity Diamond Nanocrystals with Long-Spin-Coherence Nitrogen Vacancy Centers

The combination of long spin coherence time and nanoscale size has made nitrogen vacancy (NV) centers in nanodiamonds the subject of much interest for quantum information and sensing applications. However, currently available high-pressure high-temperature (HPHT) nanodiamonds have a high concentrati...

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Podrobná bibliografia
Vydané v:	Nano letters Ročník 14; číslo 1; s. 32 - 36
Hlavní autori:	Trusheim, Matthew E, Li, Luozhou, Laraoui, Abdelghani, Chen, Edward H, Bakhru, Hassaram, Schröder, Tim, Gaathon, Ophir, Meriles, Carlos A, Englund, Dirk
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	Washington, DC American Chemical Society 08.01.2014
Predmet:	Chemical vapor deposition Chemical vapor deposition (including plasma-enhanced cvd, mocvd, etc.) Classical and quantum physics: mechanics and fields Coherence Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science; rheology Diamonds Exact sciences and technology Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties Magnetic fields Materials science Methods of deposition of films and coatings; film growth and epitaxy Nanocrystalline materials Nanocrystals Nanoscale materials and structures: fabrication and characterization Nanostructure Physics Quantum information Reactive ion etching Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties) Vacancies long coherence Nanodiamond magnetometry nitrogen vacancy reactive ion etching Vacancies Synthetic diamond Porous materials Nanostructures High pressure Polycrystalline diamond CVD Nanometer scale High pressure high temperature method Reactive ion etching Plasma etching Quantum information Nanostructured materials Spatial resolution Nanocrystal
ISSN:	1530-6984, 1530-6992, 1530-6992
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Popis
Shrnutí:	The combination of long spin coherence time and nanoscale size has made nitrogen vacancy (NV) centers in nanodiamonds the subject of much interest for quantum information and sensing applications. However, currently available high-pressure high-temperature (HPHT) nanodiamonds have a high concentration of paramagnetic impurities that limit their spin coherence time to the order of microseconds, less than 1% of that observed in bulk diamond. In this work, we use a porous metal mask and a reactive ion etching process to fabricate nanocrystals from high-purity chemical vapor deposition (CVD) diamond. We show that NV centers in these CVD nanodiamonds exhibit record-long spin coherence times in excess of 200 μs, enabling magnetic field sensitivities of 290 nT Hz–1/2 with the spatial resolution characteristic of a 50 nm diameter probe.
Bibliografia:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1530-6984 1530-6992 1530-6992
DOI:	10.1021/nl402799u