Charge qubit driven via the Josephson nonlinearity

Abstract

We study the novel nonlinear phenomena that emerge in a charge qubit due to the interplay between a strong microwave flux drive and a periodic Josephson potential. We first analyze the system in terms of the linear Landau-Zener-Stückelberg model, and show its inadequacy in a periodic system with several Landau-Zener crossings within a drive period. Experimentally, we probe the quasienergy levels of the driven qubit with an LC-cavity, which requires the use of linear response theory. We also show that our numerical calculations are in good agreement with the experimental data.

7 pages, 4 figures

References in corpus (3)

• Coherence times of dressed states of a superconducting qubit under extreme driving
• Landau-Zener-Stuckelberg Interferometry of a Single Electron Charge Qubit
• Probe spectroscopy of quasienergy states

Cited by in corpus (8)

• Nonadiabatic Landau-Zener-Stückelberg-Majorana transitions, dynamics, and interference
• Quantum systems under frequency modulation
• Stückelberg interference in a superconducting qubit under periodic latching modulation
• Observation of the Bloch-Siegert shift in a driven quantum-to-classical transition
• Photon blockade and the quantum-to-classical transition in the driven-dissipative Josephson pendulum coupled to a resonator
• Landau-Zener-Stückelberg interference in a multimode electromechanical system in the quantum regime
• Multilevel effects in a driven generalized Rabi model
• Assessment of weak-coupling approximations on a driven two-level system under dissipation