Accession Number : AD0750005

Title :   A Quantum Electrodynamic View of Superradiance as a Competition between Stimulated and Spontaneous Atomic Decay,

Corporate Author : ROCHESTER UNIV N Y DEPT OF PHYSICS AND ASTRONOMY

Personal Author(s) : Whitney,Kenneth G.

Report Date : 14 JUN 1972

Pagination or Media Count : 30

Abstract : A successive-approximation approach to the theory of superradiance is presented that establishes a connection between the quantum electrodynamics (QED) and semiclassical points of view. The basic postulate employed in the paper is that, to lowest order, the N-atom and radiation field systems will remain statistically uncorrelated in the course of their dynamical evolution if they evolve from an initially uncorrelated state. The authors comment on the relation between this result of QED and the Jaynes-Crisp-Stroud program of describing single-atom spontaneous emission semiclassically. They also comment, in view of the results of this theoretical approach, on the extent to which it is sensible to speak of superradiance in terms of the individula atoms engaging in both stimulated and spontaneous at the same time within the N-atom collection.

Descriptors :   (*ATOMIC ENERGY LEVELS, *ELECTRON TRANSITIONS), (*COHERENT RADIATION, THEORY), RELAXATION TIME, ELECTROMAGNETIC FIELDS, EQUATIONS OF MOTION, EXCITATION, QUANTUM STATISTICS

Subject Categories : Atomic and Molecular Physics and Spectroscopy
      Quantum Theory and Relativity

Distribution Statement : APPROVED FOR PUBLIC RELEASE