Observation of Autler-Townes effect in a dispersively dressed Jaynes-Cummings system

Abstract

Photon number splitting is observed in a transmon coupled to a superconducting quasi-lumped-element resonator in the strong dispersive limit. A thermal population of 5.474 GHz photons at an effective resonator temperature of T = 120mK results in a weak n = 1 photon peak along with the n = 0 photon peak in the qubit spectrum in the absence of a coherent drive on the resonator. Two-tone spectroscopy using independent coupler and probe tones reveals an Autler-Townes splitting in the thermal n = 1 photon peak. The observed effect is explained accurately using the four lowest levels of the dispersively dressed qubit-resonator system and compared to results from numerical simulations of the steady-state master equation for the coupled system.

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Cited by in corpus (19)

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• Multipartite information flow for multiple Maxwell demons
• Electromagnetically induced transparency in circuit QED with nested polariton states
• Nonclassical photon number distribution in a superconducting cavity under a squeezed drive
• Multi-photon dressing of an anharmonic superconducting many-level quantum circuit
• Polariton states in circuit QED for electromagnetically induced transparency
• Two-color electromagnetically induced transparency via modulated coupling between a mechanical resonator and a qubit
• Vacuum-induced Autler-Townes splitting in a superconducting artificial atom
• Nonlinear microwave photon-occupancy of a driven resonator strongly coupled to a transmon qubit
• Quantum coherence and population transfer in a driven cascade three-level artificial atom
• Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor surface losses
• Light-dressing of a diatomic superconducting artificial molecule
• Coherent population transfer with polariton states in circuit QED
• Characterising Polariton States in Non-Dispersive Regime of Circuit Quantum Electrodynamics
• Population-resolved measurement of an avoided crossing of light-dressed states