A Leverrier et al 2009 New J. Phys. 11 115009 doi:10.1088/1367-2630/11/11/115009
Security of continuous-variable quantum key distribution: towards a de Finetti theorem for rotation symmetry in phase space
Focus on Quantum CryptographyA Leverrier1,5, E Karpov2, P Grangier3 and N J Cerf2,4
Show affiliationsPart of Focus on Quantum Cryptography
Proving the unconditional security of quantum key distribution (QKD) is a highly challenging task as one needs to determine the most efficient attack compatible with experimental data. This task is even more demanding for continuous-variable QKD as the Hilbert space where the protocol is described is infinite dimensional. A possible strategy to address this problem is to make an extensive use of the symmetries of the protocol. In this paper, we investigate a rotation symmetry in phase space that is particularly relevant to continuous-variable QKD, and explore the way towards a new quantum de Finetti theorem that would exploit this symmetry and provide a powerful tool to assess the security of continuous-variable protocols. As a first step, a single-party asymptotic version of this quantum de Finetti theorem in phase space is derived.
- PACS
-
03.67.Dd Quantum cryptography and communication security
03.65.Ta Foundations of quantum mechanics; measurement theory
84.40.Ua Telecommunications: signal transmission and processing; communication satellites
- Subjects
- Dates
-
Issue 11 (November 2009)
Received 2 March 2009
Published 13 November 2009
-
Security of continuous-variable quantum key distribution: towards a de Finetti theorem for rotation symmetry in phase space
A Leverrier et al 2009 New J. Phys. 11 115009
-
Surface nanocrystallization of stainless steel for reduced biofilm adherence
Bin Yu et al 2008 Nanotechnology 19 335101
-
A review of the electronic and magnetic properties of tetrahedrally bonded half-metallic ferromagnets
Ph Mavropoulos and I Galanakis 2007 J. Phys.: Condens. Matter 19 315221
-
Experimental and modelling techniques for assessing the adhesion of very thin coatings on glass
Jinju Chen et al 2009 J. Phys. D: Appl. Phys. 42 214003
-
Solid–liquid interfacial energies and equilibrium shapes of nanocrystals
R Backofen and A Voigt 2009 J. Phys.: Condens. Matter 21 464109
-
Nature of the enhanced resonant modes in one-dimensional photonic random dimer systems
H Khalfoun et al 2009 J. Opt. A: Pure Appl. Opt. 11 125102
-
Collider, direct and indirect detection of supersymmetric dark matter
Howard Baer et al 2009 New J. Phys. 11 105024
-
Hawking radiation from covariant anomalies in (2+1)-dimensional black holes
Soonkeon Nam and Jong-Dae Park 2009 Class. Quantum Grav. 26 145015
-
An ab initio study of the interaction between an iron atom and graphene containing a single Stone–Wales defect
Q E Wang et al 2009 J. Phys.: Condens. Matter 21 485506
-
Ab initio molecular dynamics study of GeS2: from the crystal to the glass
Sébastien Blaineau et al 2007 J. Phys.: Condens. Matter 19 455207
Users also read
What's this?- Electronic and magnetic phase diagram of superconductors, SmFeAsO1−xFx
- Magnetic anomalies in CeIn2
- Persistent current and Drude weight for the one-dimensional Hubbard model from current lattice density functional theory
Related review articles
What's this?- Hamiltonian complexity
- Natural and artificial atoms for quantum computation
- Quantum dynamics of quantum bits