Observation of a superradiant phase transition with emergent cat states
arXiv:2207.05512 · doi:10.1103/PhysRevLett.131.113601
Abstract
Superradiant phase transitions (SPTs) are important for understanding light-matter interactions at the quantum level, and play a central role in criticality-enhanced quantum sensing. So far, SPTs have been observed in driven-dissipative systems, but the emergent light fields did not show any nonclassical characteristic due to the presence of strong dissipation. Here we report an experimental demonstration of the SPT featuring the emergence of a highly nonclassical photonic field, realized with a resonator coupled to a superconducting qubit, implementing the quantum Rabi model. We fully characterize the light-matter state by Wigner matrix tomography. The measured matrix elements exhibit quantum interference intrinsic of a photonic mesoscopic superposition, and reveal light-matter entanglement
arXiv comment20 pages, 19 figures, 2 tables
References in corpus (44)
- Quantum entanglement
- A computable measure of entanglement
- The Dicke Quantum Phase Transition with a Superfluid Gas in an Optical Cavity
- Ultrastrong coupling between light and matter
- Microwave photonics with superconducting quantum circuits
- Ultrastrong coupling regimes of light-matter interaction
- Reconstruction of non-classical cavity field states with snapshots of their decoherence
- Quantum Chaos Triggered by Precursors of a Quantum Phase Transition: The Dicke Model
- Supersolid formation in a quantum gas breaking continuous translational symmetry
- Entanglement and the Phase Transition in Single Mode Superradiance
- 10-qubit entanglement and parallel logic operations with a superconducting circuit
- Quantum Phase Transition and Universal Dynamics in the Rabi model
- Exploring Symmetry Breaking at the Dicke Quantum Phase Transition
- Observation of multi-component atomic Schrödinger cat states of up to 20 qubits
- Dynamical phase transition in the open Dicke model
- Introduction to the Dicke model: from equilibrium to nonequilibrium, and vice versa
- Is there a no-go theorem for superradiant quantum phase transitions in cavity and circuit QED ?
- Exponentially-Enhanced Light-Matter Interaction, Cooperativities, and Steady-State Entanglement Using Parametric Amplification
- Real-time observation of fluctuations at the driven-dissipative Dicke phase transition
- Experimentally simulating the dynamics of quantum light and matter at ultrastrong coupling
- Shortcuts to Adiabaticity for the Quantum Rabi Model: Efficient Generation of Giant Entangled cat States via Parametric Amplification
- Breakdown of gauge invariance in ultrastrong-coupling cavity QED
- Superradiance transition in a system with a single qubit and a single oscillator
- Observation of a quantum phase transition in the quantum Rabi model with a single trapped ion
- Nonclassicality as a Quantifiable Resource for Quantum Metrology
- Analog quantum simulation of the Rabi model in the ultra-strong coupling regime
- Quantum simulation of the quantum Rabi model in a trapped ion
- Enhancing cavity QED via anti-squeezing: synthetic ultra-strong coupling
- Probing the dynamical phase transition with a superconducting quantum simulator
- Quantum Phase Transition in the Finite Jaynes-Cummings Lattice Systems
- Protected quantum computation with multiple resonators in ultrastrong coupling circuit QED
- Quantum Simulation of the Ultrastrong Coupling Dynamics in Circuit QED
- Inversion of Qubit Energy Levels in Qubit-Oscillator Circuits in the Deep-Strong-Coupling Regime
- Dissipation-induced anomalous multicritical phenomena
- Squeezed light induced symmetry breaking superradiant phase transition
- Synthesis of antisymmetric spin exchange interaction and entanglement generation with chiral spin states in a superconducting circuit
- Emerging dissipative phases in a superradiant quantum gas with tunable decay
- Continuous-variable geometric phase and its manipulation for quantum computation in a superconducting circuit
- Deterministic entanglement swapping in a superconducting circuit
- Exploring the quantum critical behaviour in a driven Tavis-Cummings circuit
- Experimental Realization of the Rabi-Hubbard Model with Trapped Ions
- Determination of entangled quantum states of a trapped atom
- Simulating ultrastrong-coupling processes breaking parity conservation in Jaynes-Cummings systems
- Probing the spectrum of the Jaynes-Cummings-Rabi model by its isomorphism to an atom inside a parametric amplifier cavity
Cited by in corpus (27)
- Quantum amplification and simulation of strong and ultrastrong coupling of light and matter
- Nonreciprocal Superradiant Phase Transitions and Multicriticality in a Cavity QED System
- Error-Tolerant Amplification and Simulation of the Ultrastrong-Coupling Quantum Rabi Model
- Quantum phase transition of the Jaynes-Cummings model
- Sudden change of the photon output field marks phase transitions in the quantum Rabi model
- Generating three-photon Rabi oscillations without a large-detuning condition
- Experimental observation of spontaneous symmetry breaking in a quantum phase transition
- Quantum phase transitions and cat states in cavity-coupled quantum dots
- Controlling the superradiant phase transition in the quantum Rabi model
- Quantum dense coding with gravitational cat states
- Spontaneous emission in Casimir-Rabi oscillations through a weak optomechanical coupling
- Lee-Yang theory of the superradiant phase transition in the open Dicke model
- Optimally robust shortcuts to population inversion in cat-state qubits
- Critical quantum geometric tensors of parametrically-driven nonlinear resonators
- Critical quantum metrology robust against dissipation and non-adiabaticity
- Experimental demonstration of spontaneous symmetry breaking with emergent multi-qubit entanglement
- Revealing inherent quantum interference and entanglement of a Dirac particle
- Steady-state tripartite non-Gaussian entanglement and steering in output field from intracavity triple-photon parametric downconversion
- Exact steady state of quantum van der Pol oscillator: critical phenomena and enhanced metrology
- Thermal conductance at the superradiant phase transition in the quantum Rabi model
- Effective Field Theories and Finite-temperature Properties of Zero-dimensional Superradiant Quantum Phase Transitions
- Characterization of non-Markovianity with maximal extractable qubit-reservoir entanglement
- Nonreciprocal superradiant quantum phase transition induced by the magnon Kerr effect
- Optimal Dynamical Gauge in the Quantum Rabi Model
- Non-Gaussian Phase Transition and Cascade of Instabilities in the Dissipative Quantum Rabi Model
- Observation of photonic dynamics in dissipative quantum Rabi models
- Nonlinearity-driven Topology via Spontaneous Symmetry Breaking