Freiburg 2019 – wissenschaftliches Programm
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FM: Fall Meeting
FM 63: Poster: Enabling Technologies: Quantum Materials, Quantum Dots, Quantum Wires, Point Contacts and Superconducting Systems
FM 63.21: Poster
Mittwoch, 25. September 2019, 16:30–18:30, Tents
Recovering the homogeneous absorption of SiV−-ensemble — •Anna Breunig1, Ohr Lahad2, Johannes Görlitz1, Eilon Poem2, Ofer Firstenberg2, and Christoph Becher1 — 1Universität des Saarlandes, Saarbrücken 66123, Germany — 2Weizmann Institute of Science, Rehovot 76100, Israel
The negatively-charged silicon-vacancy centre in diamond is a promising system for quantum information processing due to its optically accessible spin states and all-optical coherent spin control, its long spin coherence time (albeit at very low temperatures) and its exceptional homogeneity of optical transitions. The latter recently enabled the demonstration of strong light-matter interactions in an ensemble of SiV− centres [1] putting within reach applications such as quantum memories or single-photon nonlinearities. However, inhomogeneous broadening due to the local crystal strain remains a limiting factor. To circumvent this limitation, we investigate recovery of the homogeneous absorption line based on light shifts introduced by auxiliary fields. We here present calculations according to the scheme in [2] for a SiV−-ensemble and discuss possible applications.
[1] C.Weinzetl et al., Phy. Rev. Lett. 122, 063601 (2019).
[2] arXiv:1904.06233v2 [quant-ph]