Accession Number : ADA194308

Title :   Infrared Detection Using Rydberg Atoms.

Descriptive Note : Final rept. 1 Mar 79-30 Nov 87,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE RESEARCH LAB OF ELECTRONICS

Personal Author(s) : Kleppner, Daniel

PDF Url : ADA194308

Report Date : Apr 1988

Pagination or Media Count : 6

Abstract : This is the final report on a program of research on Rydberg Atoms and Radiation. The goal of the program was to use Rydberg atoms to explore new types of fundamental radiative phenomena. As demonstrated by the research generated by this line of inquiry in laboratories in the U.S. and abroad, the program has been successful. A new area of study has been come to be called Cavity Quantum Electrodynamics has emerged in the last few years. Research under this grant on inhibited spontaneous emission is often regarded as seminal in that development. The Principal Investigator was awarded the 1986 Davisson-Germer Prize of the American Physical Society for research on Rydberg Atoms in applied fields: research under this grant was central to that achievement. Early work under the grant involved developing techniques for studying radiative transfer of Rydberg atoms on a level-by level basis. (References are to the list of publications below). During this time the P.I. conceived the idea of of 'turning off' spontaneous emission by Rydberg atoms. A closely related idea - the inhibition of black-body radiative transfer - was demonstrated shortly thereafter. Full demonstration of inhibited spontaneous emission required the development of a technique for transferring atoms to the so-called 'circular' Rydberg states. These are states of the highest possible angular momentum for a given principal quantum number. Our method has been adapted in other laboratories, and is now being employed in Rydberg atom studies and in a new type of measurement of the Rydberg constant. The most exciting advance under the grant has been the demonstration that spontaneous emission can indeed be 'switched off'.

Descriptors :   *ATOMS, *INFRARED DETECTION, *QUANTUM ELECTRODYNAMICS, ANGULAR MOMENTUM, CAVITIES, DEMONSTRATIONS, EMISSION, INHIBITION, PHYSICAL PROPERTIES, QUANTUM THEORY, RADIATION, RADIATIVE TRANSFER, SOCIETIES

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE