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Quantum key distribution using quantum dot single-photon emitting diodes in the red and near infrared spectral range.
- Source :
- New Journal of Physics; Aug2012, Vol. 14 Issue 8, p1-12, 12p
- Publication Year :
- 2012
-
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<superscript>-1</superscript>(35.4 kbit s<superscript>-1</superscript>) at a quantum bit error rate (QBER) of 3.9% (3.8%) and a g<superscript>(2)</superscript>(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<superscript>-1</superscript> at a QBER of 4.1% and a g<superscript>(2)</superscript>(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. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13672630
- Volume :
- 14
- Issue :
- 8
- Database :
- Complementary Index
- Journal :
- New Journal of Physics
- Publication Type :
- Academic Journal
- Accession number :
- 81147658
- Full Text :
- https://doi.org/10.1088/1367-2630/14/8/083001