Error-compensation measurements on polarization qubits
Error-compensation measurements on polarization qubits
复制标题
偏振量子位的误差补偿测量
DOI：
10.1364/josab.33.001256
复制
发表时间：
2015-03
影响因子：
1.9
通讯作者：
Guo Guang-Can
中科院分区：
文献类型：
--
作者：
Hou Zhibo;Zhu Huangjun;Xiang Guo-Yong;Li Chuan-Feng;Guo Guang-Can
在真实的生活中，由于测量设备的不完善，在大多数测量中不可避免地存在系统误差。减小系统误差对于保证测量结果的准确性和可靠性至关重要。为此，精密的误差补偿设计往往是必要的，除了设备校准，以减少系统误差对设备的缺陷的依赖。通过使用复合脉冲，在核磁共振系统中很好地理解了误差补偿设计的技术。相比之下，在量子光学系统中减少系统误差的工作很少。在这里，我们提出了一个误差补偿设计适用于减少系统误差的投影测量的合奏单和多量子位系统。这种设计可以显著地减小典型光学实验中由于主要误差源而引起的系统误差。特别是，它可以将半波片和四分之一波片的相位误差以及半波片的角度误差的系统误差减小到二阶。在量子比特态层析成像实验和双量子比特态层析成像数值计算中验证了该方法在减小系统误差方面的有效性。我们的研究可能会在偏振光学和量子光学的高精度任务中找到应用。
Systematic errors are inevitable in most measurements performed in real life because of imperfect measurement devices. Reducing systematic errors is crucial to ensuring the accuracy and reliability of measurement results. To this end, delicate error-compensation designs are often necessary in addition to device calibration to reduce the dependence of the systematic error on the imperfection of the devices. The art of error-compensation designs is well appreciated in nuclear magnetic resonance systems by using composite pulses. In contrast, there are few works on reducing systematic errors in quantum optical systems. Here we propose an error-compensation design applicable to reducing the systematic error in projective measurements on ensembles of both single and multiqubit systems. This design can significantly decrease the systematic error due to dominant error sources in typical optical experiments. In particular, it can reduce the systematic error to the second order of the phase errors of both the half-wave plate (HWP) and the quarter-wave plate as well as the angle error of the HWP. Its power in reducing the systematic error was verified experimentally on qubit state tomography and numerically on two-qubit state tomography. Our study may find applications in high-precision tasks in polarization optics and quantum optics.
登录
查看更多内容
DOI：
10.4018/978-1-7998-6677-0.ch001
发表时间：
2021
期刊：
Limitations and Future Applications of Quantum Cryptography
影响因子：
--
作者：
S. Billewar;G. Londhe;Sunil Ghane
通讯作者：
S. Billewar;G. Londhe;Sunil Ghane
影响因子：
8.6
作者：
R. Tycko
通讯作者：
R. Tycko
影响因子：
1.5
作者：
Christian Monyk
通讯作者：
Christian Monyk
影响因子：
64.8
作者：
Higgins, B. L.;Berry, D. W.;Pryde, G. J.
通讯作者：
Pryde, G. J.
影响因子：
3.8
作者：
Z. Hou;G. Xiang;D. Dong;Chuan‐Feng Li;G. Guo
通讯作者：
Z. Hou;G. Xiang;D. Dong;Chuan‐Feng Li;G. Guo