Non-equilibrium delocalization-localization transition of photons in circuit QED

Abstract

We show that photons in two tunnel-coupled microwave resonators each containing a single superconduct- ing qubit undergo a sharp non-equilibrium delocalization-localization (self-trapping) transition due to strong photon-qubit coupling. We find that dissipation favors the self-trapped regime and leads to the possibility of observing the transition as a function of time without tuning any parameter of the system. Furthermore, we find that self-trapping of photons in one of the resonators (spatial localization) forces the qubit in the opposite resonator to remain in its initial state (energetic localization). This allows for an easy experimental observation of the transition by local read-out of the qubit state.

4 pages, 5 figures

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Cited by in corpus (18)

• Observation of Resonant Photon Blockade at Microwave Frequencies using Correlation Function Measurements
• Low-Disorder Microwave Cavity Lattices for Quantum Simulation with Photons
• Quantum limited amplification and entanglement in coupled nonlinear resonators
• Non-equilibrium dynamics of coupled qubit-cavity arrays
• Detecting phonon blockade with photons
• Optomechanical-like coupling between superconducting resonators
• Quantum entanglement in the spatial symmetry breaking phase transition of a driven-dissipative Bose-Hubbard dimer
• Steady-state entanglement of spatially separated qubits via quantum bath engineering
• Tunable and Switchable Coupling Between Two Superconducting Resonators
• Emission characteristics of laser-driven dissipative coupled-cavity systems
• Nonequilibrium phases in hybrid arrays with flux qubits and NV centers
• Quantum phase transition in an array of coupled dissipative cavities
• Two coupled nonlinear cavities in a driven-dissipative environment
• Stochastic Differential Equations for Quantum Dynamics of Spin-Boson Networks
• Non-linear transport in an out-of-equilibrium single-site Bose Hubbard model: scaling, rectification and time dynamics
• Equilibrium and Disorder-induced behavior in Quantum Light-Matter Systems
• Selftrapping triggered by losses in cavity QED
• Localization and delocalization dynamics of photons in linearly coupled cavity arrays