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首次报道通过液相核磁共振(NMR)实验实现七量子位D.J(Deutsch-Jozsa)量子算法和精确受控相移门的实验研究结果.实验表明:使用不同脉冲序列实现了七量子位D-J算法中的Uf变换,只对Uf变换进行一次评估就可以判断所执行的变换中函数f的性质.此外,提出了实验上简单可行、设计精确、任意相移的受控相移门的实验方法.所得结果将有助于解决多量子位NMR信号的灵敏度变差问题,由于他用大量选择性脉冲序列而增加的实验复杂性问题和由于选择性脉冲的不完善使得实现逻辑门的误差增加的问题.并且,可以应用于多量子位和更复杂的算法(例如量子Fourier变换和Shor算法).
For the first time, we reported the experimental results of the Deutsch-Jozsa quantum algorithm and the accurately controlled phase-shift gate using liquid-state nuclear magnetic resonance (NMR) experiments. The experimental results show that the seven-qubit DJ algorithm , The UF transform can be evaluated only once to evaluate the nature of the function f in the transform being performed.In addition, an experimentally simple and feasible experiment method of controlled phase-shift gate with accurate phase and arbitrary phase shift is proposed. The results will help to solve the problem of sensitivity degradation of multi-qubit NMR signals, the experimental complexity issues that he adds with a large number of selective pulse sequences, and the problem of increasing the error of logic gates due to the imperfection of selective pulses. And, it can be applied to multiple qubits and more complex algorithms (such as quantum Fourier transform and Shor algorithm).