Tunable and nonlinearity-enhanced dispersive-plus-dissipative coupling in photon-pressure circuits
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arXiv
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| Autores principales: | , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866909930814963712 |
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| author | Kazouini, Mohamad Peter, Janis Guo, Zisu Emily Wilde, Benedikt Uhl, Kevin Koelle, Dieter Kleiner, Reinhold Bothner, Daniel |
| author_facet | Kazouini, Mohamad Peter, Janis Guo, Zisu Emily Wilde, Benedikt Uhl, Kevin Koelle, Dieter Kleiner, Reinhold Bothner, Daniel |
| contents | Photon-pressure circuits are the circuit implementation of the cavity optomechanical Hamiltonian and discussed for qubit readout, low-frequency quantum photonics and dark matter axion detection. Due to the enormous design flexibility of superconducting circuits, photon-pressure systems provide fascinating possibilities to explore unusual parameter regimes of the optomechanical Hamiltonian. Here, we report the realization of a photon-pressure platform, in which a GHz circuit interacts with a MHz circuit via a magnetic-flux-tunable combination of dispersive and dissipative photon-pressure. In addition, both coupling rates are considerably enhanced by nonlinearities of the GHz-mode, which leads to the multi-photon coupling rates scaling stronger with the pump photon number $n_\mathrm{c}$ than the usual $\sqrt{n_\mathrm{c}}$ dependence. We demonstrate that interference of the two interaction paths leads to a Fano-like response in photon-pressure induced transparency, and that the dynamical backaction is considerably modified compared to the dispersive case, including a parametric instability caused by a red-detuned pump tone. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_22571 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Tunable and nonlinearity-enhanced dispersive-plus-dissipative coupling in photon-pressure circuits Kazouini, Mohamad Peter, Janis Guo, Zisu Emily Wilde, Benedikt Uhl, Kevin Koelle, Dieter Kleiner, Reinhold Bothner, Daniel Quantum Physics Superconductivity Photon-pressure circuits are the circuit implementation of the cavity optomechanical Hamiltonian and discussed for qubit readout, low-frequency quantum photonics and dark matter axion detection. Due to the enormous design flexibility of superconducting circuits, photon-pressure systems provide fascinating possibilities to explore unusual parameter regimes of the optomechanical Hamiltonian. Here, we report the realization of a photon-pressure platform, in which a GHz circuit interacts with a MHz circuit via a magnetic-flux-tunable combination of dispersive and dissipative photon-pressure. In addition, both coupling rates are considerably enhanced by nonlinearities of the GHz-mode, which leads to the multi-photon coupling rates scaling stronger with the pump photon number $n_\mathrm{c}$ than the usual $\sqrt{n_\mathrm{c}}$ dependence. We demonstrate that interference of the two interaction paths leads to a Fano-like response in photon-pressure induced transparency, and that the dynamical backaction is considerably modified compared to the dispersive case, including a parametric instability caused by a red-detuned pump tone. |
| title | Tunable and nonlinearity-enhanced dispersive-plus-dissipative coupling in photon-pressure circuits |
| topic | Quantum Physics Superconductivity |
| url | https://arxiv.org/abs/2511.22571 |