Simultaneous bistability of qubit and resonator in circuit quantum electrodynamics

Abstract

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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Cited by in corpus (10)

• Quantum behavior of a superconducting Duffing oscillator at the dissipative phase transition
• Structurally stable subharmonic regime of a driven quantum Josephson circuit
• A high-efficiency plug-and-play superconducting qubit network
• Quantum phase transitions in the driven dissipative Jaynes-Cummings oscillator: from the dispersive regime to resonance
• Optical and atomic stochastic resonances in the driven dissipative Jaynes-Cummings model
• Quantum synchronization and entanglement of dissipative qubits coupled to a resonator
• A Real-time Instanton Approach to Quantum Activation
• Quantum dissipative dynamics of driven Duffing oscillator near attractors
• Superquantization rule for multistability in driven-dissipative quantum systems
• Experimental observation of multimode quantum phase transitions in a superconducting Bose-Hubbard simulator