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Proposal for sequential Stern-Gerlach experiment with programmable quantum processors |
| Meng-Jun Hu(胡孟军)1,†, Haixing Miao(缪海兴)2, and Yong-Sheng Zhang(张永生)3,4,5 |
1 Beijing Academy of Quantum Information Sciences, Beijing 100193, China;
2 State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China;
3 Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China;
4 Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China;
5 Hefei National Laboratory, University of Science and Technology of China, Hefei 230088, China |
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Abstract The historical significance of the Stern-Gerlach (SG) experiment lies in its provision of the initial evidence for space quantization. Over time, its sequential form has evolved into an elegant paradigm that effectively illustrates the fundamental principles of quantum theory. To date, the practical implementation of the sequential SG experiment has not been fully achieved. In this study, we demonstrate the capability of programmable quantum processors to simulate the sequential SG experiment. The specific parametric shallow quantum circuits, which are suitable for the limitations of current noisy quantum hardware, are given to replicate the functionality of SG devices with the ability to perform measurements in different directions. Surprisingly, it has been demonstrated that Wigner's SG interferometer can be readily implemented in our sequential quantum circuit. With the utilization of the identical circuits, it is also feasible to implement Wheeler's delayed-choice experiment. We propose the utilization of cross-shaped programmable quantum processors to showcase sequential experiments, and the simulation results demonstrate a strong alignment with theoretical predictions. With the rapid advancement of cloud-based quantum computing, such as BAQIS Quafu, it is our belief that the proposed solution is well-suited for deployment on the cloud, allowing for public accessibility. Our findings not only expand the potential applications of quantum computers, but also contribute to a deeper comprehension of the fundamental principles underlying quantum theory.
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Received: 05 September 2023
Revised: 05 November 2023
Accepted manuscript online: 06 November 2023
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PACS:
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03.65.Ta
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(Foundations of quantum mechanics; measurement theory)
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03.67.Ac
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(Quantum algorithms, protocols, and simulations)
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42.50.Dv
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(Quantum state engineering and measurements)
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| Fund: Hai-Xing Miao is supported by the State Key Laboratory of Low Dimensional Quantum Physics and the Start-up Fund provided by Tsinghua University. Yong-Sheng Zhang acknowledges the financial support provided by the National Natural Science Foundation of China (Grant No. 92065113) and the Anhui Initiative in Quantum Information Technologies. |
Corresponding Authors:
Meng-Jun Hu
E-mail: humj@baqis.ac.cn
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Cite this article:
Meng-Jun Hu(胡孟军), Haixing Miao(缪海兴), and Yong-Sheng Zhang(张永生) Proposal for sequential Stern-Gerlach experiment with programmable quantum processors 2024 Chin. Phys. B 33 020303
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