Two-photon probe of the Jaynes-Cummings model and symmetry breaking in circuit QED
arXiv:0805.3294 · doi:10.1038/nphys1016
Abstract
Superconducting qubits behave as artificial two-level atoms and are used to investigate fundamental quantum phenomena. In this context, the study of multi-photon excitations occupies a central role. Moreover, coupling superconducting qubits to on-chip microwave resonators has given rise to the field of circuit QED. In contrast to quantum-optical cavity QED, circuit QED offers the tunability inherent to solid-state circuits. In this work, we report on the observation of key signatures of a two-photon driven Jaynes-Cummings model, which unveils the upconversion dynamics of a superconducting flux qubit coupled to an on-chip resonator. Our experiment and theoretical analysis show clear evidence for the coexistence of one- and two-photon driven level anticrossings of the qubit-resonator system. This results from the symmetry breaking of the system Hamiltonian, when parity becomes a not well-defined property. Our study provides deep insight into the interplay of multiphoton processes and symmetries in a qubit-resonator system.
Accepted for publication in Nature Physics, 8 pages, 4 figures
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Cited by in corpus (60)
- Circuit Quantum Electrodynamics
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- Microwave photonics with superconducting quantum circuits
- Nonlinear response of the vacuum Rabi resonance
- Coherence and Decay of Higher Energy Levels of a Superconducting Transmon Qubit
- Tuning the Gap of a Superconducting Flux Qubit
- Two-resonator circuit QED: A superconducting quantum switch
- Strong Coupling of a Quantum Oscillator to a Flux Qubit at its Symmetry Point
- Photon shell game in three-resonator circuit quantum electrodynamics
- Giant Atoms in a Synthetic Frequency Dimension
- Quantum bits with Josephson junctions
- Planck Spectroscopy and the Quantum Noise of Microwave Beam Splitters
- Qubit-oscillator system: An analytical treatment of the ultra-strong coupling regime
- Dynamical photon-photon interaction mediated by a quantum emitter
- Experimental reconstruction of the few-photon nonlinear scattering matrix from a single quantum dot in a nanophotonic waveguide
- Parity-Symmetry-Protected Bundle Emission
- Quantum Coherent Control of a Single Molecular-Polariton Rotation
- Large-amplitude driving of a superconducting artificial atom: Interferometry, cooling, and amplitude spectroscopy
- Dissipation in circuit quantum electrodynamics: lasing and cooling of a low-frequency oscillator
- Deterministic Generation of Entangled Photons in Superconducting Resonator Arrays
- Circuit QED and sudden phase switching in a superconducting qubit array
- Coupling superconducting flux qubits at optimal point via dynamic decoupling with the quantum bus
- Protecting entanglement in superconducting qubits
- Detecting quantum-coherent nanomechanical oscillations using the current-noise spectrum of a double quantum dot
- Gradiometric flux qubits with tunable gap
- Amplitude and frequency sensing of microwave fields with a superconducting transmon qudit
- Collective Radiance Effects in the Ultrastrong Coupling Regime
- Efficient single-photon frequency conversion in the microwave domain using superconducting quantum circuits
- Josephson Coupling and Fiske Dynamics in Ferromagnetic Tunnel Junctions
- Microwave degenerate parametric down-conversion with a single cyclic three-level system in circuit QED
- Simulating ultrastrong-coupling processes breaking parity conservation in Jaynes-Cummings systems
- Optimal control for fast and high-fidelity quantum gates in coupled superconducting flux qubits
- Fabrication Technology of and Symmetry Breaking in Superconducting Quantum Circuits
- Multiple ground-state instabilities in the anisotropic quantum Rabi model
- Circuit electromechanics with single photon strong coupling
- Driven Multiphoton Qubit-Resonator Interactions
- Absence of collapse in quantum Rabi oscillations
- Linear circuit models for on-chip quantum electrodynamics
- Quantum Dynamics of a Microwave Driven Superconducting Phase Qubit Coupled to a Two-Level System
- Sideband transitions in a two-mode Josephson circuit driven beyond the rotating wave approximation
- Worm quantum Monte-Carlo study of phase diagram of extended Jaynes-Cummings-Hubbard model
- Parametric four-wave mixing toolbox for superconducting resonators
- Quantum repeater protocol in mixed single- and two-mode Tavis-Cummings models
- In-situ tunable nonlinearity and competing signal paths in coupled superconducting resonators
- Broadband noise decoherence in solid-state complex architectures
- Multiphonon transitions in a quantum electromechanical system
- Genuine non-Gaussian entanglement of light and quantum coherence for an atom from noisy multiphoton spin-boson interactions
- Two-photon sideband transition in a driven quantum Rabi model : Quantitative discussions with derived longitudinal drives and beyond the rotating wave approximation
- Many Body Physics with Coupled Transmission Line Resonators
- Single-photon-induced two qubits excitation without breaking parity symmetry
- Decay of nonlocality due to adiabatic and quantum noise in the solid state
- Strong coupling between a single-photon and a two-photon Fock state
- Achieving the volume-law entropy regime with random-sign Dicke states
- Tripartite multiphoton Jaynes-Cummings model: Analytical solution and Wigner nonclassicalities
- Circuit QED Spectra in the Ultrastrong Coupling Regime: How They Differ from Cavity QED
- Ultrastrong Coupling of a Qubit with a Nonlinear Optical Resonator
- Theory of Multi-photon Processes for Applications in Quantum Control
- Renormalisation group flow of the Jaynes-Cummings model
- Signatures of nonclassical effects in tomograms
- Two-Polariton Blockade via Ultrastrong Light-Matter Coupling