Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 25: Nano-Optics I
Q 25.2: Vortrag
Dienstag, 1. März 2016, 14:45–15:00, f342
All-optical coherent control of silicon vacancy color centers in diamond using picosecond laser pulses — •Jonas Nils Becker1, Carsten Arend1, Benjamin Pingault2, Christian Hepp2, Mete Atatüre2, and Christoph Becher1 — 1Universität des Saarlandes, Saarbrücken, Germany — 2Cavendish Laboratory, University of Cambridge, United Kingdom
In the last decade diamond-based impurity spins have been proven to be interesting systems for applications in quantum information processing. Besides the well known nitrogen vacancy center, in particular the negatively charged silicon vacancy center (SiV) has recently attracted attention because of its favourable spectral properties. In previous works we presented a detailed investigation of the electronic structure of the SiV [1] and we demonstrated access to its electronic spin within the excited state [2] as well as the ground state manifold [3]. However, the coherent optical manipulation of the SiV has not been demonstrated so far. Using picosecond laser pulses, we here present fast coherent control of the SiV employing Rabi oscillations. Furthermore, a Ramsey-type pulse sequence allows for a more general control of the created quantum state as well as for a measurement of the excited state coherence time scales. Both techniques are key requirements for applications in quantum information processing and for more complex manipulation schemes in the future.
[1] Hepp et al., Phys. Rev. Lett. 112, 036405 (2014).
[2] Müller et al., Nat. Commun. 5, 3328 (2014).
[3] Pingault, Becker et al., Phys. Rev. Lett. 113, 263601 (2014).