Erlangen 2018 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 24: Quantum Information (Solid State Systems)
Q 24.1: Talk
Monday, March 5, 2018, 16:15–16:30, K 1.020
Scalable coupling of nearly lifetime-limited quantum emitters to diamond nanocavites — •Tim Schröder1,2, Matt E. Trusheim1, Michael Walsh1, Sara Mouradian1, Luozhou Li1, Jiabao Zheng1, Marco Schukraft1, Mikkel Heuck1, Alp Sipahigil2, Ruffin E. Evans3, Denis D. Sukachev3, Christian T. Nguyen3, Jose L. Pacheco4, Ryan M. Camacho4, Edward S. Bielejec4, Mikhail Lukin3, and Dirk Englund1 — 1RLE, Massachusetts Institute of Technology, USA — 2Niels Bohr Institute, University of Copenhagen, Denmark — 3Depart of Physics, Harvard University, USA — 4Sandia National Laboratories, USA
Long-lived solid-state spin systems can serve as quantum memory in quantum information applications. Crucial for their integration in large-scale quantum architectures is their coupling to coherent photons. Here, we present the targeted creation of single silicon vacancy centres (SiV) with up to 25% conversion yield via Si focused ion beam implantation with <50 nm positioning accuracy relative to a nanocavity mode maximum. An inhomogeneously broadened ensemble linewidth of ∼51 GHz and close to lifetime-limited single-emitter transition linewidths are measured. Furthermore, targeted implantation of nitrogen vacancy (NV) centres into cavity mode maxima through self-aligned lithography enables an average of 1.1±0.2 NVs per cavity with cavity-fed spectrally selective intensity enhancement of up to 93.
[1] T. Schröder, M. E. Trusheim, M. Walsh et al., Nature Communications 8, 15376 (2017). [2] T. Schröder, M. Walsh, J. Zheng et al., Opt. Mater. Express, OME 7, 1514 (2017).