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Authors: Ágoston Schranz and Eszter Udvary

Affiliation: Budapest University of Technology and Economics, Hungary

Keyword(s): Quantum Key Distribution (QKD), Vertical Cavity Surface Emitting Lasers (VCSEL), Polarization Switching.

Related Ontology Subjects/Areas/Topics: Lasers ; Photonics, Optics and Laser Technology ; Quantum Information and Measurement ; Semiconductor Lasers and Leds

Abstract: Vertical cavity surface-emitting lasers (VCSELs) have multiple beneficial properties for applications in quantum key distribution (QKD). However, polarization switching (PS) characteristic of these lasers can be problematic if it is unwanted. The origin and properties of PS is discussed. We propose a new transmitter design for the BB84 protocol using only two VCSELs – both corresponding to one of the two bases in which polarized photons are sent –, which are modulated in polarization, purposely generating switches between two orthogonally polarized modes. Advantages and design difficulties of this design are outlined. We also consider the possibility of a spectral attack, originating from the frequency splitting between these modes, and offer a solution that can protect the key from eavesdroppers utilizing this kind of attack.

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Paper citation in several formats:
Schranz, Á. and Udvary, E. (2018). Transmitter Design Proposal for the BB84 Quantum Key Distribution Protocol using Polarization Modulated Vertical Cavity Surface-emitting Lasers. In Proceedings of the 6th International Conference on Photonics, Optics and Laser Technology - PHOTOPTICS; ISBN 978-989-758-286-8; ISSN 2184-4364, SciTePress, pages 252-258. DOI: 10.5220/0006638002520258

@conference{photoptics18,
author={Ágoston Schranz. and Eszter Udvary.},
title={Transmitter Design Proposal for the BB84 Quantum Key Distribution Protocol using Polarization Modulated Vertical Cavity Surface-emitting Lasers},
booktitle={Proceedings of the 6th International Conference on Photonics, Optics and Laser Technology - PHOTOPTICS},
year={2018},
pages={252-258},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006638002520258},
isbn={978-989-758-286-8},
issn={2184-4364},
}

TY - CONF

JO - Proceedings of the 6th International Conference on Photonics, Optics and Laser Technology - PHOTOPTICS
TI - Transmitter Design Proposal for the BB84 Quantum Key Distribution Protocol using Polarization Modulated Vertical Cavity Surface-emitting Lasers
SN - 978-989-758-286-8
IS - 2184-4364
AU - Schranz, Á.
AU - Udvary, E.
PY - 2018
SP - 252
EP - 258
DO - 10.5220/0006638002520258
PB - SciTePress

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