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Conferences > IQEC > 2013 > IB_5 > IB_5_1
  • 2013 Conference on Lasers and Electro-Optics - International Quantum Electronics Conference
  • (Optica Publishing Group, 2013),
  • paper IB_5_1

Free space quantum key distribution over 500 meters using electrically driven quantum dot single photon sources

Markus Rau, Tobias Heindel, Sebastian Unsleber, Christian Schneider, Stefan Frick, Gwenaelle Vest, Sebastian Nauerth, Matthias Lermer, Martin Kamp, Stephan Reitzenstein, Alfred Forchel, Sven Höfling, and Harald Weinfurter

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Abstract

The field of quantum key distribution has made rapid advances in the past years. Networks of QKD links were implemented, commercial QKD systems are available and research systems have reached GHz repetition rates and distances beyond 200 km. Usually decoy protocols with attenuated laser light pulses are used, where the asymptotic key rate of a QKD system is proportional to the fraction of single photon pulses sent [1]. Single photon sources (SPSs) intrinsically have a higher single photon fraction and thus reach higher key rates.

© 2013 IEEE

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