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Critical issues in polarization encoded quantum key distribution systems | IEEE Conference Publication | IEEE Xplore

Critical issues in polarization encoded quantum key distribution systems


Abstract:

An analysis of the most critical issues in quantum key distribution systems with polarization encoded photons is presented. Effects like the fiber birefringence, fiber lo...Show More

Abstract:

An analysis of the most critical issues in quantum key distribution systems with polarization encoded photons is presented. Effects like the fiber birefringence, fiber losses and some technical aspects can difficult the state of polarization control in such kind of systems, leading to an undesired quantum bit-error-rate increment. It is shown that a system with a long fiber, presenting a typical PMD value, only assures a strong correlation between two Stokes vectors for narrow wavelength separations. In terms of time correlation, it is shown that the typical drift times are much longer than delays between reference and data signals. The problematic of the reference pulse leakage to the data detector is also analyzed; a good agreement between experimental and theoretical data is observed.
Date of Conference: 27-29 April 2011
Date Added to IEEE Xplore: 23 June 2011
ISBN Information:
Conference Location: Lisbon, Portugal

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