Quantum key distribution using quantum dot single-photon emitting diodes in the red and near infrared spectral range
Abstract
We report on in-lab free space quantum key distribution (QKD) experiments over 40 cm distance using highly efficient electrically driven quantum dot single-photon sources emitting in the red as well as near-infrared spectral range. In the case of infrared emitting devices, we achieve sifted key rates of 27.2 kbit s(-1)(35.4 kbit s(-1)) at a quantum bit error rate (QBER) of 3.9% (3.8%) and a g((2))(0) value of 0.35 (0.49) at moderate (high) excitation. The red emitting diodes generate sifted keys at a rate of 95.0 kbit s(-1) at a QBER of 4.1% and a g((2))(0) value of 0.49. This first successful proof of principle QKD experiment based on electrically operated semiconductor single-photon sources can be considered as a major step toward practical and efficient quantum cryptography scenarios.
Citation
Heindel , T , Kessler , C A , Rau , M , Schneider , C , Fuerst , M , Hargart , F , Schulz , W-M , Eichfelder , M , Rossbach , R , Nauerth , S , Lermer , M , Weier , H , Jetter , M , Kamp , M , Reitzenstein , S , Höfling , S , Michler , P , Weinfurter , H & Forchel , A 2012 , ' Quantum key distribution using quantum dot single-photon emitting diodes in the red and near infrared spectral range ' , New Journal of Physics , vol. 14 , 083001 . https://doi.org/10.1088/1367-2630/14/8/083001
Publication
New Journal of Physics
Status
Peer reviewed
ISSN
1367-2630Type
Journal article
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