| Realization of Arbitrary Inverse Unitary Transformation of Single Mode Fibre by Using Three Wave Plates |
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| 引用本文： | 王少凯 任继刚 彭承志 蒋硕 王向斌. Realization of Arbitrary Inverse Unitary Transformation of Single Mode Fibre by Using Three Wave Plates[J]. 中国物理快报, 2007, 24(9): 2471-2474 |
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| 作者姓名： | 王少凯 任继刚 彭承志 蒋硕 王向斌 |
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| 作者单位： | Department of Physics, Tsinghua University, Beijing 100084 |
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| 基金项目： | Supported by the 985 Fund of Tsinghua University. |
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| 摘 要： | We report a method to realize the arbitrary inverse unitary transformation imposed by a single-mode fibre on photon＇s polarization by the succession of two quarter-wave plates and a half-wave plate. The process of realization is analysed on a Poincar6 sphere due to the fact that unitary transformation does not change the angle formed by polarization state vector. The method is meaningful in quantum communication experiment such as quantum teleportation, in which an unknown arbitrary quantum state should be kept to be unchanged in the case of using a single-mode fibre for time delay.[第一段]
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| 关 键 词： | 运算单元 单模型纤维 板材 三维技术 |
| 收稿时间： | 2007-05-08 |
| 修稿时间： | 2007-05-08 |
Realization of Arbitrary Inverse Unitary Transformation of Single Mode Fibre by Using Three Wave Plates |
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| WANG Shao-Kai,REN Ji-Gang,PENG Cheng-Zhi,JIANG Shuo,WANG Xiang-Bin. Realization of Arbitrary Inverse Unitary Transformation of Single Mode Fibre by Using Three Wave Plates[J]. Chinese Physics Letters, 2007, 24(9): 2471-2474 |
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| Authors: | WANG Shao-Kai REN Ji-Gang PENG Cheng-Zhi JIANG Shuo WANG Xiang-Bin |
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| Affiliation: | (Department of Physics, Tsinghua University, Beijing 100084 |
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| Abstract: | We report a method to realize the arbitrary inverse unitary transformation imposed by a single-mode fibre on photon's polarization by the succession of two quarter-wave plates and a half-wave plate. The process of realization is analysed on a Poincare sphere due to the fact that unitary transformation does not change the angle formed by polarization state vector. The method is meaningful in quantum communication experiment such as quantum teleportation, in which an unknown arbitrary quantum state should be kept to be unchanged in the case of using a single-mode fibre for time delay. |
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| Keywords: | 03.67.a 03.65.Ud 03.67.Mn |
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