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Could one make a diamond-based quantum computer?

Stoneham, AM; Harker, AH; Morley, GW; (2009) Could one make a diamond-based quantum computer? J PHYS-CONDENS MAT , 21 (36) , Article 364222. 10.1088/0953-8984/21/36/364222. Green open access

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Abstract

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 that 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 initialization 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.

Type: Article
Title: Could one make a diamond-based quantum computer?
Open access status: An open access version is available from UCL Discovery
DOI: 10.1088/0953-8984/21/36/364222
Publisher version: http://dx.doi.org/10.1088/0953-8984/21/36/364222
Language: English
Additional information: Text made available to UCL Discovery by kind permission of IOP Publishing, 2012
Keywords: N-V CENTERS, SELF-CONSISTENT CALCULATIONS, CHEMICAL-VAPOR-DEPOSITION, NITROGEN-VACANCY CENTER, ELECTRONIC STATES, OPTICAL SPECTROSCOPY, COHERENT TRANSIENTS, SHALLOW DEFECTS, SINGLE SPINS, PHOSPHORUS
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/162606
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