Future Perspectives for Diamond

Stoneham, A. M.

doi:10.1002/9783527623174.ch1

Cited by 3 publications

(5 citation statements)

References 18 publications

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“…1,2 The literature describing several structural defects is often based on Raman spectroscopy, 3 X-ray diffraction, 4 and cathodoluminescence 5 techniques. More rarely, transmission electron microscopy (TEM) has been employed, [6][7][8][9][10][11][12] due to the remarkable hardness of diamond, which makes the specimen preparation more difficult.…”

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confidence: 99%

Critical boron-doping levels for generation of dislocations in synthetic diamond

Alegre

Araújo

Fiori

et al. 2014

Applied Physics Letters

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International audienceDefects induced by boron doping in diamond layers were studied by transmission electron microscopy. The existence of a critical boron doping level above which defects are generated is reported. This level is found to be dependent on the CH 4 /H 2 molar ratios and on growth directions. The critical boron concentration lied in the 6.5–17.0 10 20 at/cm 3 range in the <111> direction and at 3.2 10 21 at/cm 3 for the <001> one. Strain related effects induced by the doping are shown not to be responsible. From the location of dislocations and their Burger vectors, a model is proposed, together with their generation mechanism

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confidence: 99%

Critical boron-doping levels for generation of dislocations in synthetic diamond

Alegre

Araújo

Fiori

et al. 2014

Applied Physics Letters

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“…As already noted (Stoneham 2008a(Stoneham , 2008b, diamond has many good features. There is a wealth of spectroscopy (Bridges et al 1990, Clark et al 1992in Field 1992, optical and spin resonance.…”

Section: Diamond Quantum Information Processing: Present Statusmentioning

confidence: 69%

“…But connecting patches is a challenge. There are various ideas, based on electrons (e.g., Stoneham 2008aStoneham , 2008b or photons (perhaps exploiting the methods of Benjamin et al (2009)). These will be analysed further in a paper in preparation.…”

Section: Architectures and Inhomogeneitymentioning

confidence: 99%

“…The Class 2 (SFG) approach is of this type, though the complexity of system integration should not be underestimated. The specifically materials issues have been discussed by us previously (Stoneham 2005(Stoneham , 2008a(Stoneham , 2008b, and will not be repeated here, where we shall concentrate primarily on the species that might be exploited in an SFG scheme. We combine simple scoping calculations with available experimental information to analyse what might be feasible.…”

Section: Introductionmentioning

confidence: 99%

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Could one make a diamond-based quantum computer?

Stoneham

Harker

Morley

2009

J. Phys.: Condens. Matter

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We assess routes to a diamond-based quantum computer, where we specifically look towards scalable devices, with at least 10 linked quantum gates. Such a computer should satisfy the deVincenzo rules and might be used at convenient temperatures. The specific examples we examine are based on the optical control of electron spins. For some such devices, nuclear spins give additional advantages. Since there have already been demonstrations of basic initialisation and readout, our emphasis is on routes to two-qubit quantum gate operations and the linking of perhaps 10-20 such gates. We analyse the dopant properties necessary, especially centres containing N and P, and give results using simple scoping calculations for the key interactions determining gate performance. Our conclusions are cautiously optimistic: it may be possible to develop a useful quantum information processor that works above cryogenic temperatures. PACS03.67.-a Quantum information, 42.50-Dv Quantum state engineering and measurements; 71.55.-I, Impurity and defect levels

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“…They address many of the outstanding basic problems, such as the identification of existing defects, which affect the material's properties, both desirable and less so. Regarding future substantial applications, one paper discusses diamond's exceptional properties for quantum information processing [2], a topic on which there have been many recent papers, and where a diamond colour centre single photon source is already commercially available. Biomedical applications of diamond are recognised, partly tribological and partly electrochemical, but lie outside the present group of papers.…”

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confidence: 99%

Science's gem: diamond science 2009

Mainwood

Newton

Stoneham

2009

J. Phys.: Condens. Matter

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Natural diamond has been valued for its appearance and mechanical properties for at least two thousand years. As a gem stone diamond is unsurpassed. However, scientific work, especially in the last 20 years, has demonstrated that diamond has numerous surprising properties and many unique ones. Some of the extreme properties have been known for many years, but the true scale of diamond's other highly desirable features is still only coming to light as control in the synthesis of diamond, and hence material perfection, improves. The ultimate prize for man-made diamond is surely not in the synthesis of gem stones, but in delivering technological solutions enabled by diamond to the challenges facing our society today.If the special properties are to be exploited to their full potential, at least four crucial factors must be considered. First, there must be sufficient scientific understanding of diamond to make applications effective, efficient and economical. Secondly, the means of fabrication and control of properties have to be achieved so that diamond's role can be optimised. Thirdly, it is not enough that its properties are superior to existing materials: they must be so much better that it is worth initiating new technologies to exploit them. Finally, any substantial applications will have to address the society's major needs worldwide. The clear technology drivers for the 21st century come from the biomedical technologies, the demand for energy subject to global constraints, and the information technologies, where perhaps diamond will provide the major enabling technology [1].The papers in this volume concern the solid state physics of diamond, and primarily concern the first two factors: understanding, and control of properties. They address many of the outstanding basic problems, such as the identification of existing defects, which affect the material's properties, both desirable and less so. Regarding future substantial applications, one paper discusses diamond's exceptional properties for quantum information processing [2], a topic on which there have been many recent papers, and where a diamond colour centre single photon source is already commercially available. Biomedical applications of diamond are recognised, partly tribological and partly electrochemical, but lie outside the present group of papers. Processing and controlling diamond surfaces and interfaces with other materials in their environment are critical steps en route to exploitation. Boron-doped diamond has already found application in electro-analysis and in the bulk oxidation of dissolved species in solution [3]. Energy-related applications-ranging from high-power electronics [3] to a potential first wall of fusion reactors [4]-are further exciting potential applications. Even small and ugly diamonds have value. Their mechanical properties [5] dominate, with significant niche applications such as thermal sinks. The major applications for diamond to date exploit only a fraction of diamond's special properties: visual for status diamonds, an...

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Future Perspectives for Diamond

Cited by 3 publications

References 18 publications

Critical boron-doping levels for generation of dislocations in synthetic diamond

Critical boron-doping levels for generation of dislocations in synthetic diamond

Could one make a diamond-based quantum computer?

Science's gem: diamond science 2009

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