Erlangen 2018 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 29: Quantum Optics and Photonics I
Q 29.6: Vortrag
Dienstag, 6. März 2018, 15:15–15:30, K 0.016
Coherent control and wave mixing in a thin ensemble of silicon vacancy centers in diamond — •Johannes Görlitz1, Christian Weinzetl2, Jonas Nils Becker1,2, Eilon Poem3, Joshua Nunn4, and Christoph Becher1 — 1Universität des Saarlandes, Saarbrücken, Germany — 2Clarendon Laboratory, University of Oxford, United Kingdom — 3Weizmann Institute of Science, Rehovot 76100, Israel — 4University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom
In recent research the silicon vacancy center (SiV) in diamond received significant attention due to its favorable spectral properties such as a narrow zero phonon line (ZPL) and weak phonon side bands. At cryogenic temperatures the SiV reveals its four-line fine structure, related to a level scheme featuring orbital doublets of ground and excited state. These states constitute two optically accessible Lambda-schemes. We recently demonstrated ultrafast all optical coherent control between these orbital states showing the suitability of the SiV for quantum information processing. Due to its inversion symmetry and the resulting insensitivity to fluctuating environmental fields it is possible to grow dense SiV-ensembles with small inhomogeneous broadening, thus allowing for light matter interactions in the single photon regime. We here present Stimulated Raman adiabatic passage, Raman absorption as well as a stimulated Four Wave Mixing gain process in a dense ensemble of SiV centers. These processes reveal a strong light matter interaction and thereby pave the way for further applications like single photon switches or optically controlled quantum memories.