Effective Hamiltonian for an off-resonantly driven qubit-cavity system
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866912569097191424 |
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| author | Jirlow, Martin Helambe, Kunal Eriksson, Axel M. Gasparinetti, Simone Abad, Tahereh |
| author_facet | Jirlow, Martin Helambe, Kunal Eriksson, Axel M. Gasparinetti, Simone Abad, Tahereh |
| contents | Accurate modeling of driven light-matter interactions is essential for quantum technologies, where natural and synthetic atoms are used to store and process quantum information, mediate interactions between bosonic modes, and enable nonlinear operations. In systems subject to multi-tone drives, however, the theoretical description becomes challenging and existing models cannot quantitatively reproduce the experimental data. Here, we derive an effective Hamiltonian that retains slowly rotating terms, providing a general framework for accurately describing driven dynamics across platforms. As a concrete application, we validate the theory in circuit QED, where it quantitatively reproduces experimentally measured ac Stark shifts and captures key interactions such as two-mode squeezing and beam-splitting. Our results establish a broadly applicable tool to engineer driven interactions in quantum information processing platforms. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_03375 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Effective Hamiltonian for an off-resonantly driven qubit-cavity system Jirlow, Martin Helambe, Kunal Eriksson, Axel M. Gasparinetti, Simone Abad, Tahereh Quantum Physics Accurate modeling of driven light-matter interactions is essential for quantum technologies, where natural and synthetic atoms are used to store and process quantum information, mediate interactions between bosonic modes, and enable nonlinear operations. In systems subject to multi-tone drives, however, the theoretical description becomes challenging and existing models cannot quantitatively reproduce the experimental data. Here, we derive an effective Hamiltonian that retains slowly rotating terms, providing a general framework for accurately describing driven dynamics across platforms. As a concrete application, we validate the theory in circuit QED, where it quantitatively reproduces experimentally measured ac Stark shifts and captures key interactions such as two-mode squeezing and beam-splitting. Our results establish a broadly applicable tool to engineer driven interactions in quantum information processing platforms. |
| title | Effective Hamiltonian for an off-resonantly driven qubit-cavity system |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2509.03375 |