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Author: search.filters.author.Yupapin, P. P.Subject: search.filters.subject.Quantum bits

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    Quantum key distribution via fiber optic, fidelity and error corrections
    (2010-11-01)
    Suchat, S.
    ;
    Haisirikul, N.
    ;
    Thaengtang, T.
    ;
    Paithoonwattanakij, K.
    ;
    Yupapin, P. P.
    We propose an interesting scheme on photon states generation using a fiber optic Mach Zehnder interferometer incorporating a fiber optic ring resonator without any optical pumping parts including in the system, which is available for long-distance link. In principle, the state of a quantum bit, it is known, unknown, or entangled to other systems. The desired quantum states are generated and transmitted in the link via a fiber optic. The transmission quality in terms of quantum fidelity is analyzed, where a high fidelity to the noiseless quantum channel is achieved by adding an ancillary photon after the signal photon within the correlation time of the fiber noise and by performing the quantum parity checking method. The error correction is also analyzed. For simplicity, feature and robustness against path-length mismatches among the nodes make our scheme suitable for multi-user quantum communication networks. © 2009 Elsevier GmbH. All rights reserved.
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    Quantum bits generation using correlated photons: Fidelity and error corrections
    (2010-11-01)
    Tanengtang, T.
    ;
    Paithoonwattanakij, K.
    ;
    Yupapin, P. P.
    ;
    Suchat, S.
    We propose a new system of quantum bits generation using a soliton pulse within a micro ring resonator. A quantum gate can be formed using a polarization control unit incorporating into the system. The random signal and idler pairs can be formed within the photon correlation bandwidth, which can be generated and randomly formed the packet quantum bits, i.e. quantum packet codes. Each random code (logic) can be performed by combining the signal and idler of each entangled photon pair via the quantum gate. Results obtained have shown that the packet of quantum logic bits can be generated using the entangled photon pairs generated by the proposed system. The quantum bits transmission fidelity and error corrections are also described. © 2009 Elsevier GmbH. All rights reserved.
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    Quantum packet switching generation using correlated photons in a microring resonator system
    (2010-10-01)
    Mitatha, S.
    ;
    Yupapin, P. P.
    We propose a new system of a packet of quantum bits generation using a soliton pulse within a microring resonator. A quantum gate can be formed by using a polarization control unit incorporating into the system. The random signal and idler pairs can be formed within the photon correlation bandwidth, which can be generated, and randomly form the packet quantum bits, i.e. quantum packet switching. Each random code (logic) can be performed by combining the signal and idler of each entangled photon pair via the quantum gate. Results obtained have shown that the packet of quantum logic bits can be generated using the entangled photon pairs generated by the proposed system. © 2009 Elsevier GmbH. All rights reserved.