首页|Proposal for sequential Stern-Gerlach experiment with programmable quantum processors

Proposal for sequential Stern-Gerlach experiment with programmable quantum processors

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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.

sequential Stern-Gerlachquantum circuitquantum processor

胡孟军、缪海兴、张永生

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Beijing Academy of Quantum Information Sciences,Beijing 100193,China

State Key Laboratory of Low Dimensional Quantum Physics,Department of Physics,Tsinghua University,Beijing 100084,China

Laboratory of Quantum Information,University of Science and Technology of China,Hefei 230026,China

Synergetic Innovation Center of Quantum Information and Quantum Physics,University of Science and Technology of China,Hefei 230026,China

Hefei National Laboratory,University of Science and Technology of China,Hefei 230088,China

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Beijing Academy of Quantum Information SciencesState Key Laboratory of Low Dimensional Quantum PhysicsStartup Fund provided by Tsinghua UniversityNational Natural Science Foundation of ChinaAnhui Initiative in Quantum Information Technologies

92065113

2024

10.1088/1674-1056/ad09ca

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(2)
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