期刊
PHYSICAL REVIEW LETTERS
卷 118, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.118.040402
关键词
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资金
- Engineering and Physical Sciences Research Council (EPSRC) [EP/I028900/2, EP/K003623/2]
- EPSRC [EP/L026082/1, EP/J001821/1, EP/M013243/1]
- Engineering and Physical Sciences Research Council [EP/L026082/1, EP/M013243/1, 1361373, EP/K003623/1, EP/J001821/1, EP/I028900/2, EP/K003623/2, EP/J013501/1] Funding Source: researchfish
- EPSRC [EP/J013501/1, EP/I028900/2, EP/M013243/1, EP/L026082/1, EP/K003623/1, EP/J001821/1, EP/K003623/2] Funding Source: UKRI
We explore the joint activated dynamics exhibited by two quantum degrees of freedom: a cavity mode oscillator which is strongly coupled to a superconducting qubit in the strongly coherently driven dispersive regime. Dynamical simulations and complementary measurements show a range of parameters where both the cavity and the qubit exhibit sudden simultaneous switching between two metastable states. This manifests in ensemble averaged amplitudes of both the cavity and qubit exhibiting a partial coherent cancellation. Transmission measurements of driven microwave cavities coupled to transmon qubits show detailed features which agree with the theory in the regime of simultaneous switching.
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