| 多光子偏振态与单光子高维空间态之间的相互变换及其应用 |
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| 引用本文： | 林青.多光子偏振态与单光子高维空间态之间的相互变换及其应用[J].物理学报,2011,60(8):84209-084209. |
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| 作者姓名： | 林青 |
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| 作者单位： | 华侨大学信息科学与工程学院,厦门 361021 |
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| 基金项目： | 国家自然科学基金(批准号:11005040)、福建省自然科学基金(批准号:2010J05008)和中央高等学校基本科研基金(批准号:JB-SJ1007)资助的课题. |
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| 摘 要： | 基于一种特殊的控制非门,实现多光子偏振态与单光子空间高维态之间的相互变换,使得对多光子偏振态的操作可以通过对单光子的操作来完成,由此可以实现任意多光子正定算符值测量和多光子任意幺正操作.这种实现方式是以一定概率完成的,但其效率要优于此前的方案,在目前的实验条件下是可行的.
关键词：
单光子空间态
特殊控制非门
线性光学多端口干涉仪
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| 关 键 词： | 单光子空间态 特殊控制非门 线性光学多端口干涉仪 |
| 收稿时间： | 2010-10-19 |
Mapping between multi-photon polarization state and single-photon spatial qudit and its applications |
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| Lin Qing.Mapping between multi-photon polarization state and single-photon spatial qudit and its applications[J].Acta Physica Sinica,2011,60(8):84209-084209. |
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| Authors: | Lin Qing |
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| Institution: | College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China |
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| Abstract: | Based on a special controlled-NOT gate, a multi-photon state encoded in polarizations of photons could be transformed into the corresponding single photon qudit encoded in spatial mode. It will make the processing on multi-photon change into the operation on a single-photon, if the inverse transformation from a single photon qudit back to a multi-photon state could be realized also. Associated with linear optical multi-port interferometer for single-photon unitary operation, the positive-operator value measurement and the universal unitary operation for multi-photon state are realized. This approach is more efficient than the previous one with decomposition into two-qubit gates in the circuit-based quantum computation, and it is feasible with using the current experimental technology. |
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| Keywords: | single photon qudit special controlled-NOT gate linear optical multi-port interferometer |
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