| 非理想强度差起伏量子非破坏性测量的实验方案 |
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| 引用本文： | 苏红,张为俊,王世兴.非理想强度差起伏量子非破坏性测量的实验方案[J].光学学报,2001,21(7):57-860. |
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| 作者姓名： | 苏红 张为俊 王世兴 |
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| 作者单位： | 1. 中国科学院安徽光学精密机械研究所
2. 中国科学院固体物理研究所, |
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| 摘 要： | 提出了一种强度差起伏量子非破坏性（QND）测量的实验方案，该方案通过一个非简并光学参量放大腔实现。推导了在非理想状态下该系统的传输系数和量子态制备能力的关系式，分别讨论了探针输入噪声谱和探测系统测量效率对其测量的影响。结果表明：探针输入噪声越小，测量效率越高，则其测量质量就越好，且对测量效率越敏感。
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| 关 键 词： | 量子非破坏性测量 强度差起伏 非简并光学参量放大腔 光学计量 |
Experimental Scheme of Nonideal QND Measurement for Intensity Difference Fluctuations |
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| Su Hong Zhang Weijun Wang Shixing ,Laser Spectrum Laboratory,Anhui Institute of Optics and Fine Mechanics,The Chinese Academy of Sciences,Hefei.Experimental Scheme of Nonideal QND Measurement for Intensity Difference Fluctuations[J].Acta Optica Sinica,2001,21(7):57-860. |
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| Authors: | Su Hong Zhang Weijun Wang Shixing Laser Spectrum Laboratory Anhui Institute of Optics and Fine Mechanics The Chinese Academy of Sciences Hefei |
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| Institution: | Su Hong 1) Zhang Weijun 1) Wang Shixing 2) 1),Laser Spectrum Laboratory,Anhui Institute of Optics and Fine Mechanics,The Chinese Academy of Sciences,Hefei 230031 2),Institute of Solid State Physics,The Chinese Academy of Sci |
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| Abstract: | Based on the theory proposed by Walls et al, an experimental scheme of quantum non demolition (QND) measurement for intensity difference fluctuations is put forward, which is realized though a nondegenerate optical parametric amplifier. The relations of transference coefficients and the ability for quantum state preparation are deduced on the nonideal condition, and the influences of probe input noise spectrum and measurement efficiency of detection system on the measurement criteria are discussed, respectively. In conclusion, the smaller probe input noise and the larger measurement efficiency, the measurement quality is better and more sensitive to the measurement efficiency. |
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| Keywords: | quantum non demolition measurement intensity difference fluctuations nondegenerate optical parametric amplifier |
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