Optimal Control for Open Quantum System in Circuit Quantum Electrodynamics
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2024
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| _version_ | 1866909443810131968 |
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| author | Zhou, Mo Cárdenas-López, F. A. Dominique, Sugny Chen, Xi |
| author_facet | Zhou, Mo Cárdenas-López, F. A. Dominique, Sugny Chen, Xi |
| contents | We propose a quantum optimal control framework based on the Pontryagin Maximum Principle to design energy- and time-efficient pulses for open quantum systems. By formulating the Langevin equation of a dissipative LC circuit as a linear control problem, we derive optimized pulses with exponential scaling in energy cost, outperforming conventional shortcut-to-adiabaticity methods such as counter-diabatic driving. When applied to a resonator dispersively coupled to a qubit, these optimized pulses achieve an excellent signal-to-noise ratio comparable to longitudinal coupling schemes across varying critical photon numbers. Our results provide a significant step toward efficient control in dissipative open systems and improved qubit readout in circuit quantum electrodynamics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_20149 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Optimal Control for Open Quantum System in Circuit Quantum Electrodynamics Zhou, Mo Cárdenas-López, F. A. Dominique, Sugny Chen, Xi Quantum Physics We propose a quantum optimal control framework based on the Pontryagin Maximum Principle to design energy- and time-efficient pulses for open quantum systems. By formulating the Langevin equation of a dissipative LC circuit as a linear control problem, we derive optimized pulses with exponential scaling in energy cost, outperforming conventional shortcut-to-adiabaticity methods such as counter-diabatic driving. When applied to a resonator dispersively coupled to a qubit, these optimized pulses achieve an excellent signal-to-noise ratio comparable to longitudinal coupling schemes across varying critical photon numbers. Our results provide a significant step toward efficient control in dissipative open systems and improved qubit readout in circuit quantum electrodynamics. |
| title | Optimal Control for Open Quantum System in Circuit Quantum Electrodynamics |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2412.20149 |