Open AccessThe use of dynamic cavity environment to achieve controlling of the process of spontaneous emission of an atom
Author(s) -
Huang Xian-Shan,
Hailian Liu
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.034205
Subject(s) - energy exchange , dissipation , atom (system on chip) , spontaneous emission , excited state , electromagnetic environment , physics , coherence (philosophical gambling strategy) , redistribution (election) , atomic physics , energy (signal processing) , optics , quantum mechanics , laser , computer science , telecommunications , atmospheric sciences , embedded system , politics , law , political science
In the paper, we theoretically discuss the use of dynamic cavity environment to realize controlling of the evolution of spontaneous emission from an excited two-level atom. It is found that cyclical changes in cavity environment leads to the interaction betwcen the electromagnetic modes, resulting in the redistribution of the electromagnetic modes density; both the frequency of energy exchange and the energy dissipation rate between atom and environment are affected. When the frequency of environment change is relatively accordant with the process of energy exchange between the atom and environment, the decay rate is obviously inhibited and a stable coherence evolution can be obtained. Thus the evolution of coherent states can be modulated by using dynamic environment changes.