Acta Photonica Sinica, Volume. 45, Issue 3, 327001(2016)

Quantum Properties of Information Each Other Between Two Nods

WU Yun-wen*, DENG Yan, ZHOU Xiao-qing, CAO Guang-tao, and ZHONG Hong-hua
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    Considering a coupled cavity system composed of two sub-systems, which are constituted by the cavity modes and qubits. Combing the quantum theory and numerical calculation, the amount was described to transfer message and the uncertainty of the information source by using entropy. The entropy evolution of the two nodes with respect to different coupling strengths between the two-level particle and cavity mode, transition coupling of cavity-cavity and detuning were studied. For the resonance state, it is found that the two qubits exhibit quasi-periodic collapse and revival, the peak of entropy of qubits 1 and 2 appear alternately. For the non-resonance state, the frequency of qubits is higher inside the node, low frequency of anther by discord. With frequency hopping λ/2π between the two nodes, the photon is in mishan bus as information transmission. No matter which qubit was adjusted, the information of quantum state evolution always transfers from the qubit with high frequency to the qubit with low frequency. The results can be extended to the transmission of quantum information among multiple qubits.

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    WU Yun-wen, DENG Yan, ZHOU Xiao-qing, CAO Guang-tao, ZHONG Hong-hua. Quantum Properties of Information Each Other Between Two Nods[J]. Acta Photonica Sinica, 2016, 45(3): 327001

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    Paper Information

    Received: Oct. 8, 2015

    Accepted: --

    Published Online: Apr. 1, 2016

    The Author Email: Yun-wen WU (wuyw_jd@163.com)

    DOI:10.3788/gzxb20164503.0327001

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