The Dicke model is a fundamental model of quantum optics, which describes the interaction between light and matter. 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 between the light and matter … See more The Dicke model is a quantum mechanical model that describes the coupling between a single-mode cavity and $${\displaystyle N}$$ two-level systems, or equivalently $${\displaystyle N}$$ spin-½ degrees of freedom. The … See more The Dicke model of Eq. 1 assumes that the cavity mode and the two-level systems are perfectly isolated from the external environment. In actual experiments, this assumption is not … See more The Dicke model can be generalized by considering the effects of additional terms in the Hamiltonian of Eq. 1. For example, a recent experiment realized an open Dicke model with … See more • Jaynes–Cummings model • Superradiance • Superradiant phase transition See more Early studies of the Dicke model considered its equilibrium properties. These works considered the limit of $${\displaystyle N\to \infty }$$ (also known as the … See more Semiclassical limit A phase space for the Dicke model in the symmetric atomic subspace with $${\displaystyle S=N/2}$$ may be constructed by … See more The simplest realization of the Dicke model involves the dipole coupling between two-level atoms in a cavity. In this system, the observation of the superradiant transition is hindered by two possible problems: (1) The bare coupling between atoms and … See more WebJun 7, 2024 · The modified Dicke Hamiltonian is extended to describe the effective of two-qubit model [31,32,33]. Recently, we studied a system of a two-level atom BEC coupled to a high-finesse optical cavity . Furthermore, we presented a simple model describing SR of the DM Hamiltonian using the HWl coherent states.
Energies of the ground and first excited states of the Dicke ...
WebWe show that a Dicke-type non-hermitian Hamiltonian admits entirely real spectra by mapping it tothe “Dressed Dicke Model”(DDM) through a similarity transformation. We find a positive-definite metric in the Hilbert space of the non-hermitian Hamiltonian so that the time-evolution is unitary and allows a consistent quantum description. WebOct 14, 2011 · The Dicke Hamiltonian is invariant under transformations of the point group C2 = {I,exp(ipiLambdaˆ)}, with Lambdaˆ the excitation number operator. To restore this parity symmetry, we separate ... sharp pn-le701 stand
Dynamical phase transition in the open Dicke model PNAS
WebApr 1, 2010 · Apart from the last term, is the Dicke Hamiltonian 26 that describes the coupling between N two-level systems with transition frequency ω 0 = 2ω r and a bosonic field mode with frequency ω ... WebDec 19, 2024 · We theoretically investigate the enhancement of the charging power in a Dicke quantum battery which consists of an array of N two-level systems (TLS)coupled to a single mode of cavity photons. In the limit of small N, we analytically solve the time evolution for the full charging process. The eigenvectors of the driving Hamiltonian are found to … WebMar 2, 2015 · In Fig. 3B a mean-field calculation (based upon a Dicke Hamiltonian, SI Appendix) is shown for a homogeneous, infinite system without collisional interaction, which shows the same signatures as observed in Fig. 3A including dynamical details as the oscillation of the red trace around ε p ≈ 2.5 and the overshooting of the blue trace around … porridge spanisch