JETP Letters

, Volume 96, Issue 5, pp 336–341 | Cite as

Quantum key distribution on composite photons, polarization qutrits

  • S. P. Kulik
  • S. N. Molotkov
  • I. V. Radchenko
Quantum Information Science


Polarization states of a photon are the most natural degrees of freedom for encoding classical information bits. The two-dimensional space of states associated with polarization degrees of freedom of the photon is insufficient for many problems of information transfer with quantum states. We propose to use the polarization degrees of freedom of composite states of photons (polarization qutrits) for secret cryptographic key distribution.


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Copyright information

© Pleiades Publishing, Ltd. 2012

Authors and Affiliations

  • S. P. Kulik
    • 1
  • S. N. Molotkov
    • 1
    • 2
    • 3
  • I. V. Radchenko
    • 4
  1. 1.Moscow State UniversityMoscowRussia
  2. 2.Academy of Cryptography of the Russian FederationMoscowRussia
  3. 3.Institute of Solid State PhysicsRussian Academy of SciencesChernogolovka, Moscow regionRussia
  4. 4.Prokhorov General Physics InstituteRussian Academy of SciencesMoscowRussia

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