Quick search Find article
Quick search
Find article
Deutsche Physikalische Gessellschaft IOP Institute of Physics

General theory for decoy-state quantum key distribution with an arbitrary number of intensities

Masahito Hayashi

Show affiliations


We develop a general theory for quantum key distribution (QKD) in both the forward error correction and the reverse error correction cases when the QKD system is equipped with phase-randomized coherent light with an arbitrary number of decoy intensities. For this purpose, generalizing Wang's expansion, we derive a convex expansion of the phase-randomized coherent state. We also numerically check that the asymptotic key generation rates are almost saturated when the number of decoy intensities is three.


PACS

03.67.Dd Quantum cryptography and communication security

42.50.-p Quantum optics

03.67.Pp Quantum error correction and other methods for protection against decoherence

Subjects

Computational physics

Optics, quantum optics and lasers

Quantum information and quantum mechanics

Dates

Issue 8 (August 2007)

Received 1 June 2007

Published 24 August 2007



  1. General theory for decoy-state quantum key distribution with an arbitrary number of intensities

    Masahito Hayashi 2007 New J. Phys. 9 284

  2. Inhomogeneous light shift effects on atomic quantum state evolution in non-destructive measurements

    Patrick J Windpassinger et al 2008 New J. Phys. 10 053032

  3. WZW-like action for heterotic string field theory

    Nathan Berkovits et al JHEP11(2004)038

  4. Physics during the first two years of the LHC

    Fabiola Gianotti 2007 New J. Phys. 9 332

  5. Molecular high-order harmonic generation: analysis of a destructive interference condition

    S Odžak and D B Milošević 2009 J. Phys. B: At. Mol. Opt. Phys. 42 071001

  6. State and local governments plan for development of most land vulnerable to rising sea level along the US Atlantic coast

    J G Titus et al 2009 Environ. Res. Lett. 4 044008

  7. Electroweak precision observables and the unhiggs

    Adam Falkowski and Manuel Pérez-Victoria JHEP12(2009)061

  8. From peptide-based material science to protein fibrils: discipline convergence in nanobiology

    David Zanuy et al 2006 Phys. Biol. 3 S80

  9. High-temperature macroscopic entanglement

    Vlatko Vedral 2004 New J. Phys. 6 102

  10. Quantum entanglement and topological entanglement

    Louis H Kauffman and Samuel J Lomonaco Jr 2002 New J. Phys. 4 73

View by subject




Export








Please login to access our web services, or create an account if you don't yet have one.

You must have cookies enabled in your web browser to be able to login.

Username
Password

Forgotten your password? Get a new one here.