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Quantum Cryptography Security Quantum Foundations

Measurement-device-independent quantum key distribution with all-photonic adaptive Bell measurement

arXiv

Authors: Koji Azuma, Kiyoshi Tamaki, William J. Munro

Year

2014

Paper ID

48094

Status

Preprint

Abstract Read

~2 min

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Abstract

The time-reversed version of entanglement-based quantum key distribution (QKD), called measurement-device-independent QKD (mdiQKD), was originally introduced to close arbitrary security loopholes of measurement devices. Here we show that the mdiQKD has another advantage which should be distinguished from the entanglement-based QKD. In particular, an all-photonic adaptive Bell measurement, based on the concept of quantum repeaters, can be installed solely in the mdiQKD, which leads to a square root improvement in the key rate. This Bell measurement also provides a similar improvement in the single-photon-based entanglement generation of quantum repeaters.

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The time-reversed version of entanglement-based quantum key distribution (QKD), called measurement-device-independent QKD (mdiQKD), was originally introduced to close arbitrary...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1408.2884 [2] arXiv https://arxiv.org/abs/1408.2884 [3] Publisher https://arxiv.org/abs/1408.2884

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