Autler-Townes effect in a superconducting three-level system

Abstract

When a three-level quantum system is irradiated by an intense coupling field resonant with one of the three possible transitions, the absorption peak of an additional probe field involving the remaining level is split. This process is known in quantum optics as the Autler-Townes effect. We observe these phenomena in a superconducting Josephson phase qubit, which can be considered an "artificial atom" with a multilevel quantum structure. The spectroscopy peaks can be explained reasonably well by a simple three-level Hamiltonian model. Simulation of a more complete model (including dissipation, higher levels, and cross-coupling) provides excellent agreement with all the experimental data.

References in corpus (5)

• Coherent quantum state storage and transfer between two phase qubits via a resonant cavity
• Nonlinear response of the vacuum Rabi resonance
• Coherent Population Trapping of an Electron Spin in a Single Negatively Charged Quantum Dot
• Measurement of Autler-Townes and Mollow transitions in a strongly driven superconducting qubit
• High-fidelity gates in a Josephson qubit

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