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Quantum Cryptography Security Entanglement Theory Quantum Correlations

Quantum discord as a resource for quantum cryptography

arXiv
Authors: Stefano Pirandola

Year

2013

Paper ID

32805

Status

Preprint

Abstract Read

~2 min

Abstract Words

79

Citations

N/A

Abstract

Quantum discord is the minimal bipartite resource which is needed for a secure quantum key distribution, being a cryptographic primitive equivalent to non-orthogonality. Its role becomes crucial in device-dependent quantum cryptography, where the presence of preparation and detection noise (inaccessible to all parties) may be so strong to prevent the distribution and distillation of entanglement. The necessity of entanglement is re-affirmed in the stronger scenario of device-independent quantum cryptography, where all sources of noise are ascribed to the eavesdropper.

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  • This paper contributes to the Entanglement Theory & Quantum Correlations research area in the Quantum Articles archive.
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  • Quantum discord is the minimal bipartite resource which is needed for a secure quantum key distribution, being a cryptographic primitive equivalent to non-orthogonality.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1309.2446 [2] arXiv https://arxiv.org/abs/1309.2446 [3] Publisher https://arxiv.org/abs/1309.2446

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