Dicke model phase transition

Author: znyr

August undefined, 2024

WebJul 1, 2013 · We experimentally study the influence of dissipation on the driven Dicke quantum phase transition, realized by coupling external degrees of freedom of a Bose–Einstein condensate to the light field of a high-finesse optical cavity. The cavity provides a natural dissipation channel, which gives rise to vacuum-induced fluctuations … WebOct 16, 2024 · The Dicke model describes the coupling between a quantized cavity field and a large ensemble of two-level atoms. When the number of atoms tends to infinity, this model can undergo a transition …

The Dicke model in quantum optics: Dicke model revisited ...

WebMar 2, 2015 · Here, we study a dynamical phase transition in the open Dicke model emulated in an atom–cavity system prepared near zero temperature. The Dicke model is a paradigmatic scenario of quantum many-body physics, still subject to intensive research despite a history more than half a century long (17 –28). WebWe discuss the onset of quantum chaos and thermalization in the two-mode Dicke model, which describes the dipolar interaction between an ensemble of spins and two bosonic modes. The two-mode Dicke model exhibits normal to superradiant quantum phase transition with spontaneous breaking either of a discrete or continuous symmetry. We … smallwood farm crozet va

[1805.09828] Introduction to the Dicke model: from …

WebAug 8, 2011 · The Rényi entropies of the Dicke model are presented. This quantum-optical model describes a single-mode bosonic field interacting with an ensemble of N two-level atoms. There is a quantum phase transition in the N → ∞ limit. It is shown that there is an abrupt change in the Rényi entropy of order β at the transition point. Around the critical … WebA Simple Phase Transition Model for Metal Passivation Kinetics G. L. Griffin Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455 ... where the phase transition between isolated cations and a condensed oxide layer occurs via spinodal decom- position; and the limit of a fully ... WebMar 28, 2011 · A short review of recent developments of the Dicke model in quantum optics is presented. The focus is on the model in a cavity at zero temperature and in the rotating wave approximation. Topics discussed include spectroscopic structures, the giant quantum oscillator, entanglement and phase transitions. smallwood farm leavenworth

Introduction to the Dicke Model: From Equilibrium …

Dynamical phase transition in the open Dicke model

In quantum optics, a superradiant phase transition is a phase transition that occurs in a collection of fluorescent emitters (such as atoms), between a state containing few electromagnetic excitations (as in the electromagnetic vacuum) and a superradiant state with many electromagnetic excitations trapped inside the emitters. The superradiant state is made thermodynamically favorable by having strong, coherent interactions between the emitters. WebAug 4, 2024 · Considering this Dicke-Lattice model with the unique Z 2 symmetry, its QPTs behavior can be controlled additionally by this periodic phonon-phonon interaction in k … hilde trapmannWebMay 24, 2024 · The Dicke model describes the coupling between a quantized cavity field and a large ensemble of two-level atoms. When the number of atoms tends to infinity, … smallwood farms douglasville

"WebMar 2, 2015 · Here, we study a dynamical phase transition in the open Dicke model emulated in an atom–cavity system prepared near zero temperature. The Dicke model … " - Dicke model phase transition

Dicke model phase transition

Coulomb interactions, gauge invariance, and phase transitions of …

WebWe revisit the Almheiri-Polchinski dilaton gravity model from a two-dimensional (2D) bulk perspective. We describe a peculiar feature of the model, namely the pattern of conformal symmetry breaking u

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WebApr 1, 2010 · The Dicke model describes a collective matter–light interaction and has been predicted to show an intriguing quantum phase transition. Here we realize the … WebThe synthetic gauge field and dissipation are of crucial importance in both fundamental physics and applications. Here, we investigate the interplay of the uniform flux and the on-site gain and loss by considering a dissipative two-leg ladder model. By calculating the spectral winding number and the generalized Brillouin zone, we predict the non …

WebNov 30, 2024 · The Dicke model, which describes the coupling of an ensemble of spins to a harmonic oscillator, is known for its superradiant phase transition, which can both be observed in the ground state in a purely Hamiltonian setting, as well as in the steady state of an open-system Dicke model with dissipation. We demonstrate that, in addition, the … WebSep 4, 2024 · In the Dicke model, the light component is described as a single quantum mode, while the matter is described as a set of two-level systems. When the coupling …

WebJun 12, 2003 · We investigate the quantum-chaotic properties of the Dicke Hamiltonian; a quantum-optical model that describes a single-mode bosonic field interacting with an … WebAug 4, 2024 · In view of this lattice model with the Z 2 symmetry, its quantum phase transitions behavior can be controlled by this periodic phonon-phonon interactions in the momentum space. This investigation may be considered as a fresh attempt on manipulating the critical behaviors of the collective spins through the external mechanical method.

WebPhase transitions of a generalized Dicke model in the Coulomb gauge—including Aterms in the matter-radiation coupling, as well as direct dipole-dipole interaction terms—are studied. After a brief review of previous work on the 'no-go theorem' for phase transitions in the Dicke model, it is shown that a consistent truncation of the radiation ...

WebMar 28, 2011 · A short review of recent developments of the Dicke model in quantum optics is presented. The focus is on the model in a cavity at zero temperature and in the … smallwood farms douglasville gaWebDec 16, 2009 · A phase transition describes the sudden change of state in a physical system, such as the transition between a fluid and a solid. Quantum gases provide the opportunity to establish a direct link between experiment and generic models which capture the underlying physics. A fundamental concept to describe the collective matter-light … hilde trannumWebNov 7, 2013 · Viewed this way, there is a clear relation between the phase transitions in the JCHM and the Dicke–Hepp–Lieb [31–34] superradiance phase transition of the Tavis–Cummings model , which is frequently referred to as the Dicke model 3. This section discusses how theories developed for the Dicke model can be used to understand the … hilde tranumWebSep 13, 2024 · The Dicke model exhibits a variety of phase transitions. The quantum phase transition from the normal phase to the super-radiant phase is marked by a … smallwood farmsWebJun 12, 2003 · We investigate the quantum-chaotic properties of the Dicke Hamiltonian; a quantum-optical model that describes a single-mode bosonic field interacting with an ensemble of N two-level atoms. This model exhibits a zero-temperature quantum phase transition in the N → ∞ limit, which we describe exactly in an effective Hamiltonian … smallwood fabricationsWebJun 4, 2014 · The critical point for the phase transition of the Dicke model can be derived using the mean field coherent state 36, where the mean field ansatz of the ground … smallwood farms leavenworth waWebWe extend the idea of quantum phase transitions of light in atom-photon system with Dicke-Bose-Hubbard model for arbitrary number of two-level atoms. The formulations of … smallwood farms omak