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arXiv · 1410.1850

Detector-Device-Independent Quantum Key Distribution

Charles Ci Wen Lim·Boris Korzh·Anthony Martin·Felix Bussieres·Rob Thew·Hugo Zbinden
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Abstract

Recently, a quantum key distribution (QKD) scheme based on entanglement swapping, called measurement-device-independent QKD (mdiQKD), was proposed to bypass all detector side-channel attacks. While mdiQKD is conceptually elegant and offers a supreme level of security, the experimental complexity is challenging for practical systems. For instance, it requires interference between two widely separated independent single-photon sources, and the rates are dependent on detecting two photons - one from each source. Here we experimentally demonstrate a QKD scheme that removes the need for a two-photon system and instead uses the idea of a two-qubit single-photon (TQSP) to significantly simplify the implementation and improve the efficiency of mdiQKD in several aspects.

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Charles Ci Wen Lim, Boris Korzh, Anthony Martin, Felix Bussieres, Rob Thew, Hugo Zbinden. 2014-10-15. Detector-Device-Independent Quantum Key Distribution. https://doi.org/10.1063/1.4903350

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