CV-MDI-QKD: One-mode Gaussian attacks are not enough

Stefano Pirandola; Carlo Ottaviani; Gaetana Spedalieri; Samuel L. Braunstein

CV-MDI-QKD: One-mode Gaussian attacks are not enough

Stefano Pirandola, Carlo Ottaviani, Gaetana Spedalieri, Samuel L. Braunstein

Computer Science

Research output: Working paper › Preprint

Abstract

The security proof of continuous variable (CV) measurement device independent (MDI) quantum key distribution (QKD) cannot be reduced to the analysis of one-mode Gaussian attacks (in particular, independent entangling-cloner attacks). To stress this point, the present note provides a very simple (almost trivial) argument, showing that there are an infinite number of two-mode Gaussian attacks which cannot be reduced to or simulated by one-mode Gaussian attacks. This result further confirms that the security analysis of CV-MDI-QKD must involve a careful minimization over two-mode attacks as originally performed in [S. Pirandola et al., Nature Photon. 9, 397-402 (2015)].

Original language	English
Pages	1-3
Number of pages	3
Publication status	Published - 14 Sept 2015

Bibliographical note

Brief note. 3 pages

Keywords

quant-ph

Access to Document

http://arxiv.org/pdf/1509.04144v1.pdf

Cite this

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title = "CV-MDI-QKD: One-mode Gaussian attacks are not enough",

abstract = "The security proof of continuous variable (CV) measurement device independent (MDI) quantum key distribution (QKD) cannot be reduced to the analysis of one-mode Gaussian attacks (in particular, independent entangling-cloner attacks). To stress this point, the present note provides a very simple (almost trivial) argument, showing that there are an infinite number of two-mode Gaussian attacks which cannot be reduced to or simulated by one-mode Gaussian attacks. This result further confirms that the security analysis of CV-MDI-QKD must involve a careful minimization over two-mode attacks as originally performed in [S. Pirandola et al., Nature Photon. 9, 397-402 (2015)].",

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T2 - One-mode Gaussian attacks are not enough

AU - Pirandola, Stefano

AU - Ottaviani, Carlo

AU - Spedalieri, Gaetana

AU - Braunstein, Samuel L.

N1 - Brief note. 3 pages

PY - 2015/9/14

Y1 - 2015/9/14

N2 - The security proof of continuous variable (CV) measurement device independent (MDI) quantum key distribution (QKD) cannot be reduced to the analysis of one-mode Gaussian attacks (in particular, independent entangling-cloner attacks). To stress this point, the present note provides a very simple (almost trivial) argument, showing that there are an infinite number of two-mode Gaussian attacks which cannot be reduced to or simulated by one-mode Gaussian attacks. This result further confirms that the security analysis of CV-MDI-QKD must involve a careful minimization over two-mode attacks as originally performed in [S. Pirandola et al., Nature Photon. 9, 397-402 (2015)].

AB - The security proof of continuous variable (CV) measurement device independent (MDI) quantum key distribution (QKD) cannot be reduced to the analysis of one-mode Gaussian attacks (in particular, independent entangling-cloner attacks). To stress this point, the present note provides a very simple (almost trivial) argument, showing that there are an infinite number of two-mode Gaussian attacks which cannot be reduced to or simulated by one-mode Gaussian attacks. This result further confirms that the security analysis of CV-MDI-QKD must involve a careful minimization over two-mode attacks as originally performed in [S. Pirandola et al., Nature Photon. 9, 397-402 (2015)].

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EP - 3

BT - CV-MDI-QKD

ER -