منابع مشابه
Dicke Superradiance in a magnetoplasma
We present theoretical results for superradiance, i.e. the collective coherent decay of a radiating system, in a semiconductor heterostructure under a strong quantizing magnetic field. We predict a strong peak (‘Dicke-peak’) in the emission intensity as a function of time, which should be observable after a short initial excitation of electrons into the conduction band. This peak has a characte...
متن کاملPhoton localization and Dicke superradiance in atomic gases.
Photon propagation in a gas of N atoms is studied using an effective Hamiltonian describing photon-mediated atomic dipolar interactions. The density P(Gamma) of photon escape rates is determined from the spectrum of the NxN random matrix Gamma_{ij}=sin(x_{ij})/x_{ij}, where x_{ij} is the dimensionless random distance between any two atoms. Varying disorder and system size, a scaling behavior is...
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We consider a micromaser model to study the influence of Dicke superradiance in the context of the one-atom maser. The model involves a microwave cavity into which twolevel Rydberg atoms are pumped in pairs. We consider a random pump mechanism which allows the presence of at most one pair of atoms in the cavity at any time. We analyze the differences between the present system, called the Dicke...
متن کاملNon-equilibrium dynamics of the Dicke model for mesoscopic aggregates: signatures of superradiance
In the dissipative quantum dynamics of a mesoscopic aggregate of excited two level systems (atoms) coupled to a single resonance mode of a cavity, two physical phenomena associated with superradiance appear. A pronounced emission peak on short time scales is related to the known superradiant burst of excited atoms cooperatively radiating into free space. It is followed by relaxation to a statio...
متن کاملSpin superradiance versus atomic superradiance
A comparative analysis is given of spin superradiance and atomic superradiance. Their similarities and distinctions are emphasized. It is shown that, despite a close analogy, these phenomena are fundamentally different. In atomic systems, superradiance is a self-organized process, in which both the initial cause, being spontaneous emission, as well as the collectivizing mechanism of their inter...
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ژورنال
عنوان ژورنال: Physica B: Condensed Matter
سال: 1999
ISSN: 0921-4526
DOI: 10.1016/s0921-4526(99)00301-4