Dynamics of spin-momentum entanglement from superradiant phase transitions
arXiv:2312.03827 · doi:10.1103/PhysRevResearch.6.033193
Abstract
Exploring operational regimes of many-body cavity QED with multi-level atoms remains an exciting research frontier for their enhanced storage capabilities of intra-level quantum correlations. In this work, we consider an experimentally feasible many-body cavity QED model describing a four-level system, where each of those levels is formed from a combination of different spin and momentum states of ultra-cold atoms in a cavity. The resulting model comprises a pair of Dicke Hamiltonians constructed from pseudo-spin operators, effectively capturing two intertwined superradiant phase transitions. The phase diagram reveals regions featuring weak and strong entangled states of spin and momentum atomic degrees of freedom. These states exhibit different dynamical responses, ranging from slow to fast relaxation, with the added option of persistent entanglement temporal oscillations. We discuss the role of cavity losses in steering the system's dynamics into such entangled states and propose a readout scheme that leverages different light polarizations within the cavity. Our work paves the way to connect the rich variety of non-equilibrium phase transitions that occur in many-body cavity QED to the buildup of quantum correlations in systems with multi-level atom descriptions.
arXiv comment13+12 pages, 8+2 figures
References in corpus (72)
- Topological Insulators
- A computable measure of entanglement
- Spin Hall effect
- A generic new platform for topological quantum computation using semiconductor heterostructures
- Topological superconductors: a review
- The Dicke Quantum Phase Transition with a Superfluid Gas in an Optical Cavity
- Spin-orbit coupling in quantum gases
- Proposed realization of the Dicke-model quantum phase transition in an optical cavity QED system
- The Dicke model phase transition in the quantum motion of a Bose-Einstein condensate in an optical cavity
- Dynamical phase transition in the open Dicke model
- Introduction to the Dicke model: from equilibrium to nonequilibrium, and vice versa
- Cavity QED with Quantum Gases: New Paradigms in Many-Body Physics
- Dynamics of Nonequilibrium Dicke Models
- Observation of a continuous time crystal
- Real-time observation of fluctuations at the driven-dissipative Dicke phase transition
- Programmable Interactions and Emergent Geometry in an Atomic Array
- Collective Dynamics of Bose--Einstein Condensates in Optical Cavities
- Universality of Dicke superradiance in arrays of quantum emitters
- Dissipation Induced Structural Instability and Chiral Dynamics in a Quantum Gas
- Spinor self-ordering of a quantum gas in a cavity
- On the critical exponent of a quantum noise driven phase transition: the open system Dicke-model
- Formation of a spin texture in a quantum gas coupled to a cavity
- Imbalance Entanglement: Symmetry Decomposition of Negativity
- Entanglement-Enhanced Matter-Wave Interferometry in a High-Finesse Cavity
- Dissipation-induced anomalous multicritical phenomena
- Bridging entanglement dynamics and chaos in semiclassical systems
- Emerging dissipative phases in a superradiant quantum gas with tunable decay
- Dynamical phase transitions in the collisionless pre-thermal states of isolated quantum systems: theory and experiments
- Dicke model simulation via cavity-assisted Raman transitions
- Superradiant and Lasing States in Driven-Dissipative Dicke Models
- Self-oscillating pump in a topological dissipative atom-cavity system
- Exactness of mean-field equations for open Dicke models with an application to pattern retrieval dynamics
- Atom-only descriptions of the driven-dissipative Dicke model
- Cavity QED engineering of spin dynamics and squeezing in a spinor gas
- Dicke superradiance in ordered lattices: dimensionality matters
- Emergent dark states from superradiant dynamics in multilevel atoms in a cavity
- Dynamical spin-orbit coupling of a quantum gas
- Cavity-quantum-electrodynamical toolbox for quantum magnetism
- Out-of-equilibrium dynamics of quantum many-body systems with long-range interactions
- Improving cold-atom sensors with quantum entanglement: Prospects and challenges
- Bell-state generation for spin qubits via dissipative coupling
- Mean-field validity in a dissipative critical system: Liouvillian gap, -symmetric antigap, and permutational symmetry in the model
- Disorder-Driven Density and Spin Self-Ordering of a Bose-Einstein Condensate in a Cavity
- Optical waveguiding by atomic entanglement in multilevel atom arrays
- Entanglement and replica symmetry breaking in a driven-dissipative quantum spin glass
- Designing exotic many-body states of atomic spin and motion in photonic crystals
- Realization of a periodically driven open three-level Dicke model
- Dissipation-engineered family of nearly dark states in many-body cavity-atom systems
- A cavity-QED quantum simulator of dynamical phases of a BCS superconductor
- Observing dynamical currents in a non-Hermitian momentum lattice
- Parametrically driven-dissipative three-level Dicke model
- Entanglement-Enhanced Optical Atomic Clocks
- Kinetically Constrained Quantum Dynamics in Superconducting Circuits
- Dynamical scaling of correlations generated by short- and long-range dissipation
- Quantum Critical Scaling under Periodic Driving
- Variational waveguide QED simulators
- Cavity Sub- and Superradiance Enhanced Ramsey Spectroscopy
- Deep thermalization in constrained quantum systems
- Universality class of Ising critical states with long-range losses
- Conventional and unconventional Dicke models: Multistabilities and nonequilibrium dynamics
- Surprises in the Deep Hilbert Space of all-to-all systems: From super-exponential scrambling to slow entanglement growth
- Crafting the dynamical structure of synchronization by harnessing bosonic multilevel cavity QED
- Dynamics of inhomogeneous spin ensembles with all-to-all interactions: breaking permutational invariance
- Subradiance of multilevel fermionic atoms in arrays with filling
- Spin- and Momentum-Correlated Atom Pairs Mediated by Photon Exchange and Seeded by Vacuum Fluctuations
- Condensate formation in a dark state of a driven atom-cavity system
- Beyond one-axis twisting: Simultaneous spin-momentum squeezing
- Squeezing multilevel atoms in dark states via cavity superradiance
- Speeding Up Squeezing with a Periodically Driven Dicke Model
- Spin-Orbit Interaction Enabled High-Fidelity Two-Qubit Gates
- Intertwining of lasing and superradiance under spintronic pumping
- Spin-momentum entanglement in a Bose-Einstein condensate