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Quantum Voting Machine Encoded with Microwave Photons |
| Yu Zhang1,2,3*, Chuiping Yang4, Qiping Su4, Yihao Kang4, Wen Zheng1,2,3, Shaoxiong Li1,2,3, and Yang Yu1,2,3,5* |
1National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing 210093, China
2Shishan Laboratory, Nanjing University, Suzhou 215163, China
3Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
4Department of Physics, Hangzhou Normal University, Hangzhou 310036, China
5Hefei National Laboratory, Hefei 230088, China
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| Cite this article: |
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Yu Zhang, Chuiping Yang, Qiping Su et al 2024 Chin. Phys. Lett. 41 070302 |
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Abstract We propose a simple quantum voting machine using microwave photon qubit encoding, based on a setup comprising multiple microwave cavities and a coupled superconducting flux qutrit. This approach primarily relies on a multi-control single-target quantum phase gate. The scheme offers operational simplicity, requiring only a single step, while ensuring verifiability through the measurement of a single qubit phase information to obtain the voting results. It provides voter anonymity, as the voting outcome is solely tied to the total number of affirmative votes. Our quantum voting machine also has scalability in terms of the number of voters. Additionally, the physical realization of the quantum voting machine is general and not limited to circuit quantum electrodynamics. Quantum voting machine can be implemented as long as the multi-control single-phase quantum phase gate is realized in other physical systems. Numerical simulations indicate the feasibility of this quantum voting machine within the current quantum technology.
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Received: 07 May 2024
Express Letter
Published: 21 June 2024
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| PACS: |
03.67.Lx
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(Quantum computation architectures and implementations)
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85.25.Dq
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(Superconducting quantum interference devices (SQUIDs))
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42.50.Dv
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(Quantum state engineering and measurements)
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