Could one make a diamond-based quantum computer?

Details Could one make a diamond-based quantum computer? Could one make a diamond-based quantum computer?

2009-04-30

arxiv.org/abs/0904.4895v1

Journal of Physics: Condensed Matter 21, 364222 (2009)

Physics

Quantum Physics

16 pages, 3 figures

Scientific paper

10.1088/0953-8984/21/36/364222

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.

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