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【期刊论文】Generating entanglment of photon-number states with coherent light via cross-Kerr nonlinearity
张智明, Zhi-Ming Zhang*, Jian Yang, and Yafei Yu
,-0001,():
-1年11月30日
We propose a scheme for generating entangled states of light fields. This scheme only requires the cross- Kerr nonlinear interaction between coherent light-beams, followed by a homodyne de-tection. Therefore, this scheme is within the reach of current technology. We study in detail the generation of the entangled states states between two nodes, and that among three modes. In addition to the Bell states between two modes and the W states among three modes, we find plentiful new kinds of entangled states. Finally, the scheme can be extend to generate the entangled states among more that three modes.
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张智明, 杨健), 任珉), 於亚飞), 张智明), 刘颂豪)
物理学报,2008,57(2):887~891,-0001,():
-1年11月30日
提出一种基于交叉尔非线性效应的纠缠态转移方案。利用该方案可以将离散变量光场态之间的纠缠关系转移到连续变量光场态(相干态)上。通过适当设置初始相干态的振幅,该方案可以使转移后的纠缠相干态处于最大纠缠态。
交叉克尔效应,, 纠缠转移,, 纠缠相干态
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【期刊论文】Realization of universal quantum cloning with SQUID qubits in a cavity
张智明, Jian Yang, Ya-Fei Yu, and Zhi-Ming Zhang*
,-0001,():
-1年11月30日
We propose a scheme to realize 1→2 universal quantum cloning machine (UQCM) with su-perconducting quantum interference device (SQUID) qubits, embeded in a high-Q cavity. CNOT operations are derived to present our scheme, and the two-photon Raman resonance processes are used to increase the operation rate. Compared with previous works, our scheme has advantages in the experimental realization and further utilization.
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