TELECOMMUNICATIONS AND RADIO ENGINEERING - 2009 Vol. 68,
No 20 		 

 

 

 

Dispersional Restriction of the Transmission Link Length in Quantum Cryptographic Telecommunication Systems with Polarization Encoding

M.A. Omarov and R.I. Tsekhmistro
Kharkiv National University of Radio Engineering and Electronics, 14, Lenin Ave, Kharkiv, 61166, Ukraine

Abstract
The existing means for increasing of transmission stability in quantum and fiber optic telecommunication systems with polarization encoding are analyzed. It is suggested the evaluation of signal propagation delay incurred by dispersion inherent to the present-day fiber optic applied in the systems of transmission up to 150…2000 km as compared to the coherence interval of GaAs semiconductor lasers. Recommendations on optimal application of optical fiber and laser in practically used quantum cryptographic transmission systems with polarization encoding are provided.

References

  1. Bennett, C.H., and Brassard, G., (1984), Quantum cryptography: Public key distribution and coin tossing, Proceedings of IEEE International Conference on Computers, Systems and Signal Processing, pp. 175-179.
  2. Bennett, C.H., (1992), Quantum Cryptography Using Any Two Nonorthogonal States, Phys. Rev. Letters, 68(3121):134-155.
  3. Muler, A., (1996), Quantum cryptography over 23 km in installed under-lake telecom fiber, Europhysics Letters, 33:234-246.
  4. Svechnikova, S.V., and Andrushko, L.M., (1988) Manual on Fiber Optic Telecommunication Links. Tekhnika, Kiev: 239 p. (in Russian).
  5. Gower, J., (1989), Optical Communication Systems. Radio i Svyaz, Moscow: 308 p. (in Russian).
  6. Gisin, N., (2002), Quantum Cryptography, Reviews of Modern Physics, 74:145-195.
  7. Eliot, Ch., (2003), Quantum cryptography in practice, BBN Technology Preprint, 1.
  8. Hughes, R., (2002), Practical free-space quantum key distribution over 10 km in daylight and at night, New J. Phys. 4(43):1012-1019.
  9. First Commercial Quantum Cryptography System, www.magiqtech.com.
  10. Peterman, K., and Arnold, G., (1982), Noise and distortion of semiconductor lasers in optical fiber systems, IEEE J. of Quantum Ets. QE-18:543-555.
  11. Wada, O., (1982), Performance and reliability of high radiance InGaAsP/ InP LEDs operating in 1.15-1.5 μm wavelength region, IEEE J. of Quantum Ets. QE-18:368-374.
  12. Mishchuk, R., (2006), Passive optical networks: introduction to the technology, Networking and business. Telecommunications and networks – technologies and the market. 2(27):102-105.


pages 1841-1848

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