2013/10/04 by Matthias Leifgen, Tim Schröder, Friedemann Gädeke +8 · 1 citation
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1088/1367-2630/16/2/023021
14 pages, 5 figures
arxiv created 2013/10/04 · arxiv updated 2015/06/17
We demonstrate a quantum key distribution (QKD) testbed for room temperature single photon sources based on defect centres in diamond. A BB84 protocol over a short free-space transmission line is implemented. The performance of nitrogen-vacancy (NV) as well as silicon-vacancy defect (SiV) centres is evaluated and an extrapolation for next-generation sources with enhanced efficiency is discussed.