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Journal Article

CVD diamond for spintronics.


Balasubramanian,  G.
Research Group of Nanoscale Spin Imaging, MPI for biophysical chemistry, Max Planck Society;

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Markham, M. L., Dodson, J. M., Scarsbrook, G. A., Twitchen, D. J., Balasubramanian, G., Jelezko, F., et al. (2011). CVD diamond for spintronics. Diamond and Related Materials, 20(2), 134-139. doi:10.1016/j.diamond.2010.11.016.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0027-7697-B
The ability to minimise, control and manipulate defects in CVD diamond has grown rapidly over the last ten years. The application which best illustrates this is probably that of quantum information processing (QIP) or ‘diamond spintronics’. QIP is a rapidly growing area of research, covering diverse activities from computing and code breaking to encrypted communication. All these applications need ‘quantum bits’ or qubits where the quantum information can be maintained and controlled. Controlled defects in an otherwise high perfection diamond lattice are rapidly becoming a leading contender for qubits, and offer many advantages over alternative solutions. The most promising defect is the NV− defect whose unique properties allow the state of its electron spin to be optically written to and read from. Substantial developments in the synthesis of CVD diamond have produced diamond lattices with a high degree of perfection, such that the electron spin of this centre exhibits very long room temperature decoherence times (T2) in excess of 1 ms. This paper gives a brief review of the advantages and challenges of using CVD diamond as a qubit host. Lastly the various qubit applications being considered for diamond are discussed, highlighting the current state of development including the recent development of high sensitivity magnetometers.