Home / Journals / JQC / Vol.1, No.2, 2019
  • Open Access

    ARTICLE

    Quantum Blockchain: A Decentralized, Encrypted and Distributed Database Based on Quantum Mechanics

    Chuntang Li1, Yinsong Xu1, Jiahao Tang1, Wenjie Liu1,2,*
    Journal of Quantum Computing, Vol.1, No.2, pp. 49-63, 2019, DOI:10.32604/jqc.2019.06715
    Abstract Quantum blockchain can be understood as a decentralized, encrypted and distributed database based on quantum computation and quantum information theory. Once the data is recorded in the quantum blockchain, it will not be maliciously tampered with. In recent years, the development of quantum computation and quantum information theory makes more and more researchers focus on the research of quantum blockchain. In this paper, we review the developments in the field of quantum blockchain, and briefly analyze its advantages compared with the classical blockchain. The construction and the framework of the quantum blockchain are introduced. Then we introduce the method of… More >

  • Open Access

    ARTICLE

    An Ui Design Optimization Strategy for General App in Big Data Environment

    Hangjun Zhou1, Jieyu Zhou1,*, Guang Sun2,3, Wangdong Jiang3, Chuntian Luo1, Xiaoping Fan1, Haowen Zhang1, Haoran Zhang1
    Journal of Quantum Computing, Vol.1, No.2, pp. 65-80, 2019, DOI:10.32604/jqc.2019.07238
    Abstract Due to the huge amount of increasing data, the requirements of people for electronic products such as mobile phones, tablets, and notebooks are constantly improving. The development and design of various software applications attach great importance to users’ experiences. The rationalized UI design should allow a user not only enjoy the visual design experience of the new product but also operating it more pleasingly. This process is to enhance the attractiveness and performance of the new product and thus to promote the active usage and consuming conduct of users. In this paper, an UI design optimization strategy for general APP… More >

  • Open Access

    ARTICLE

    Quantum Multi-User Detection Based on Coherent State Signals

    Wenbin Yu1, 2, 3, 4, *, Yinsong Xu1, 2, 3, Wenjie Liu1, 2, 3, Alex Xiangyang Liu4, Baoyu Zheng5
    Journal of Quantum Computing, Vol.1, No.2, pp. 81-88, 2019, DOI:10.32604/jqc.2019.07324
    Abstract Multi-user detection is one of the important technical problems for modern communications. In the field of quantum communication, the multi-access channel on which we apply the technology of quantum information processing is still an open question. In this work, we investigate the multi-user detection problem based on the binary coherent-state signals whose communication way is supposed to be seen as a quantum channel. A binary phase shift keying model of this multi-access channel is studied and a novel method of quantum detection proposed according to the conclusion of the quantum measurement theory. As a result, the average interference between deferent… More >

  • Open Access

    ARTICLE

    Anti-Noise Quantum Network Coding Protocol Based on Bell States and Butterfly Network Model

    Zhexi Zhang1, Zhiguo Qu1,2,*
    Journal of Quantum Computing, Vol.1, No.2, pp. 89-109, 2019, DOI:10.32604/jqc.2019.07415
    Abstract How to establish a secure and efficient quantum network coding algorithm is one of important research topics of quantum secure communications. Based on the butterfly network model and the characteristics of easy preparation of Bell states, a novel anti-noise quantum network coding protocol is proposed in this paper. The new protocol encodes and transmits classical information by virtue of Bell states. It can guarantee the transparency of the intermediate nodes during information, so that the eavesdropper Eve disables to get any information even if he intercepts the transmitted quantum states. In view of the inevitability of quantum noise in quantum… More >

  • Open Access

    ARTICLE

    Quantum Algorithm for Appointment Scheduling

    Wenbin Yu1, 2, 3, *, Yinsong Xu1, 2, 3, Wenjie Liu1, 2, 3, Alex Xiangyang Liu4, Baoyu Zheng5
    Journal of Quantum Computing, Vol.1, No.2, pp. 111-118, 2019, DOI:10.32604/jqc.2019.07412
    Abstract Suppose a practical scene that when two or more parties want to schedule an appointment, they need to share their calendars with each other in order to make it possible. According to the present result the whole communication cost to solve this problem should be their calendars’ length by using a classical algorithm. In this work, we investigate the appointment schedule issue made by N users and try to accomplish it in quantum information case. Our study shows that the total communication cost will be quadratic times smaller than the conventional case if we apply a quantum algorithm in the… More >

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