Long-distance quantum-key-distribution using concatenated entanglement swapping with practical resources

Aeysha Khalique; Barry C. Sanders

doi:10.1117/12.2237870

13 September 2016 Long-distance quantum-key-distribution using concatenated entanglement swapping with practical resources

Aeysha Khalique, Barry C. Sanders

Author Affiliations +

Proceedings Volume 9980, Quantum Communications and Quantum Imaging XIV; 99800R (2016) https://doi.org/10.1117/12.2237870
Event: SPIE Optical Engineering + Applications, 2016, San Diego, California, United States

Abstract

We present our approach for sharing photons and assessing resultant four-photon visibility between two distant parties using concatenated entanglement swapping. In addition we determine the corresponding key generation rate and the quantum bit-error rate. Our model is based on practical limitations of resources, including multipair parametric down-conversion sources, inefficient detectors with dark counts and lossy channels. Through this approach, we have found that a trade-off is needed between experimental run-time, pair-production rate and detector efficiency. Concatenated entanglement swapping enables huge distances for quantum key-distribution but at the expense of low key generation rate.

Conference Presentation

Citation Download Citation

Aeysha Khalique and Barry C. Sanders "Long-distance quantum-key-distribution using concatenated entanglement swapping with practical resources", Proc. SPIE 9980, Quantum Communications and Quantum Imaging XIV, 99800R (13 September 2016); https://doi.org/10.1117/12.2237870

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