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Quantum Cryptography Security

Unidimensional continuous-variable quantum key distribution using squeezed states

arXiv
Authors: Vladyslav C. Usenko

Year

2018

Paper ID

7419

Status

Preprint

Abstract Read

~2 min

Abstract Words

114

Citations

N/A

Abstract

The possibility of using squeezed states in the recently suggested unidimensional continuous-variable quantum key distribution based on a single quadrature modulation is addressed. It is shown that squeezing of the signal states expands the physicality bounds of the effective entangled state shared between the trusted parties due to the antisqueezing noise in the unmodulated quadrature. Modulation of the antisqueezed quadrature, on the other hand, effectively shrinks the physicality bounds due to the squeezing in the unmodulated quadrature and also provides noise on the reference side of the protocol, thus limiting the possibility of eavesdropping in noisy channels. This strategy is practical for low-loss (i.e., short-distance) channels, especially if direct reconciliation scheme is applied.

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  • This paper contributes to the Quantum Cryptography & Security research area in the Quantum Articles archive.
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  • The possibility of using squeezed states in the recently suggested unidimensional continuous-variable quantum key distribution based on a single quadrature modulation is addressed.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1809.09162 [2] arXiv https://arxiv.org/abs/1809.09162 [3] Publisher https://arxiv.org/abs/1809.09162

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