Quantum Toffoli gate in hybrid optomechanical system
恭喜雷鹏同学论文被Result in Physics 录用,雷鹏同学为本校本科生,擅长数值模拟也有很好的理论功底。该论文是“基于光力系统量子信息处理的研究”课题中的一部分。
相关信息如下:
阅读更多恭喜雷鹏同学论文被Result in Physics 录用,雷鹏同学为本校本科生,擅长数值模拟也有很好的理论功底。该论文是“基于光力系统量子信息处理的研究”课题中的一部分。
相关信息如下:
阅读更多非互易性在信息控制中是十分重要的,常见的器件有二极管、磁光器件等。在很多的量子系统中也发现了非互易的存在,而非局域性又是量子的特有的性质之一;如果将二者结合起来便可以构造不局限于空间的非局域器件,这种器件不再是像经典的二极管那样的局域化的控制器件,而是由相距很远又有着量子关联的两个或者多个端口构成,其间的关联不再需要任何的介质或者传递者,这类似于量子通讯,所不同的是我们不是用于传递信息,而是执行非局域的量子操作或者用于控制量子信息网络的传输,例如,我们可以将制备好的非局域器件控制端放在自己手上,而受控端可以丢在宇宙的任何一个角落,只需要保证其相干性,便可以执行超越空间的控制操作。
这个工作计算量比较大,但计算上没有太大的难度,非局域性的证明需要一点小技巧。个人觉得挺有意思的,学生着急毕业并未太仔细打磨,刊物发表上有些遗憾。
论文摘要:A nonlocal circulator protocol is proposed in hybrid optomechanical system. By analogy with quantum communication, using the input-output relationship, we establish the quantum channel between two optical modes with long-range. The three body nonlocal interaction between the cavity and the two oscillators is obtained by eliminating the optomechanical cavity mode and verifying the Bell-CHSH inequality of continuous variables. By introducing the phase accumulation between cyclic interactions, the unidirectional transmission of quantum state between optical mode and two mechanical modes are achieved. The results show that nonreciprocal transmissions are achieved as long as the accumulated phase reaches a certain value. In addition, the effective interaction parameters in our system are amplified, which reduces the difficulty of the implementation of our protocol. Our research can provide potential applications for nonlocal manipulation and transmission control of quantum platforms.
此为与华北电力大学穆青霞副教授合作的工作,先给出我们研究这个课题的目的:
Story line,
Information is stored in solid qubits (phonon), we need to readout a copy of the information in flying qubit (photon) for quantum information processing, and also need to keep the original information unchanged.
故事梗概大致就是这样的了。
阅读更多Dear Professor Zhang,
It is my pleasure to inform you that your article ‘Optomechanical force sensor in a non-Markovian regime’ is one of the Top 10 most cited articles published by authors from a Chinese institution in New Journal of Physics in the period 2017-2018; with your article receiving 28 citations on Web of Science to date.
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