Continuous-variable quantum-key-distribution protocols with a non-Gaussian modulation

By Anthony Leverrier, Philippe Grangier. Physical Review A, 2011

145 citations recorded by the source corpus.

In this paper, we consider continuous-variable quantum-key-distribution (QKD) protocols which use non-Gaussian modulations. These specific modulation schemes are compatible with very efficient error-correction procedures, hence allowing the protocols to outperform previous protocols in terms of achievable range. In their simplest implementation, these protocols are secure for any linear quantum channels (hence against Gaussian attacks). We also show how the use of decoy states makes the protocols secure against arbitrary collective attacks, which implies their unconditional security in the asymptotic limit.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/a42c789858ad74ee139f4e7ee4d8e4fa879cb46f

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In Atomic and Molecular Physics, and Optics

Citations in the corpus

Advances in quantum cryptography (2019, unknown): “In the asymptotic limit, its security has been proven against Gaussian attacks [430] and, more recently, general attacks [431].”
Distributing Secret Keys with Quantum Continuous Variables: Principle, Security and Implementations (2015, unknown): “Other protocols have been investigated in the literature: two-way protocols [13,14], protocols with a non-Gaussian modulation [15–19] or post-selection [20]; but, their security analysis is less advanced, and we will not consider them further in this short review.”
Continuous‐Variable Quantum Key Distribution with Gaussian Modulation—The Theory of Practical Implementations (2017, methodology): “ccurrence of quantisation noise. In fact, since the standard security analysis of CV-QKD assumes continuous Gaussian states, this imperfection has to be taken into account on a more fundamental level [74, 75]. 32 where we used (A.16) in the second and third line. Assuming variance symmetry of the qu”