Berlin 2014 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 16: Poster: Quantum information, micromechanical oscillators, matter wave optics, precision measurements and metrology

Q 16.13: Poster

Montag, 17. März 2014, 16:30–18:30, Spree-Palais

A scanning probe quantum processor using NV centres — •Andreas Brunner, Rainer Stöhr, Friedemann Reinhard, and Jörg Wrachtrup — 3. Physikalisches Institut und Forschungszentrum SCoPE, Universität Stuttgart, Germany

The nitrogen-vacancy (NV) colour centre in diamond has shown to be a promising candidate for applications in quantum information [1]. This is due to its electron spin structure featuring long coherence times and allowing optical state readout.

We introduce a NV scanning-probe quantum processor architecture. It combines a scanning NV read/write head with an array of stationary solid state quits. This allows to benefit both from the straightforward NV manipulation and readout [2] and from the superb coherence properties of otherwise optically inactive qubits, e.g. fullerenes.

Our realisation of this configuration joins a commercial low temperature AFM with confocal microscope access and microwave addressing. We present this setup as well as first benchmark measurements of cryogenic NV manipulation.

[1] N. Mizuochi et al., Nature Photonics 6, 299-303 (2012)

[2] F. Jelezko et al., Phys. Rev. Lett. 93, 130501 (2004)