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    Continuous variable quantum key distribution via a simultaneous optical-wireless up-down-link system
    (2010-09-01)
    Suchat, S.
    ;
    Pornsuwancharoen, N.
    ;
    Yupapin, P. P.
    We propose a remarkably simple system of a continuous variable quantum key distribution using chaotic signals generated by a soliton pulse within a nonlinear micro-ring resonator system. By using the appropriate soliton input power and micro-ring parameters, continuous signals are generated spreading over the spectrum. Polarized photons are formed incorporating the polarization control unit into the micro-ring system, which allows different time slot entangled photons to be randomly formed. Two different frequency bands for up-down-link converters can be selected (filtered) and performed, which is available for the simultaneous up-down-link application in the telephone networks. Results obtained have shown that the application of such a system for continuous variable quantum cryptography via optical-wireless up-down-link converters within a single system is plausible. © 2009 Elsevier GmbH. All rights reserved.
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    QKD and QDC via optical-wireless link for quantum mobile telephone network application
    (2010-01-01)
    Pornsuwanchroen, N.
    ;
    Jamsai, M.
    ;
    Yupapin, P. P.
    We propose a novel system of the simultaneous continuous variable quantum key distribution (QKD) and quantum dense coding (QDC) using a soliton pulse within the nonlinear micro-ring resonator devices. By using the appropriate soliton input power and nonlinear micro-ring parameters, the continuous signals are generated spreading over the spectrum. The polarized photons are formed by using the polarization control unit incorporating into the micro-ring system, which is allowed the different time slot entangled photon pair randomly formed. Results obtained have shown that the application of such a system for the simultaneous continuous variable quantum cryptography and dense coding within a single system is plausible, which is can be implemented within the mobile telephone hand set and networks. © 2009 Elsevier GmbH. All rights reserved.
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