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Quantum Cryptography Security

Practical high-dimensional quantum key distribution with decoy states

arXiv
Authors: Darius Bunandar, Zheshen Zhang, Jeffrey H. Shapiro, Dirk R. Englund

Year

2014

Paper ID

46604

Status

Preprint

Abstract Read

~2 min

Abstract Words

119

Citations

N/A

Abstract

High-dimensional quantum key distribution (HD-QKD) allows two parties to generate multiple secure bits of information per detected photon. In this work, we show that decoy state protocols can be practically implemented for HD-QKD using only one or two decoy states. HD-QKD with two decoy states, under realistic experimental constraints, can generate multiple secure bits per coincidence at distances over 200 km and at rates similar to those achieved by a protocol with infinite decoy states. Furthermore, HD-QKD with only one decoy state is practical at short distances, where it is almost as secure as a protocol with two decoy states. HD-QKD with only one or two decoy states can therefore be implemented to optimize the rate of secure quantum communications.

Why This Paper Matters

  • This paper contributes to the Quantum Cryptography & Security research area in the Quantum Articles archive.
  • It adds a 2014 reference point for readers tracking recent quantum research.
  • High-dimensional quantum key distribution (HD-QKD) allows two parties to generate multiple secure bits of information per detected photon.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1411.1070 [2] arXiv https://arxiv.org/abs/1411.1070 [3] Publisher https://arxiv.org/abs/1411.1070

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