%0 Journal Article
%T Work Done on a Coherently Driven Quantum System
%A Issofa Nsangou
%A Lukong Cornelius Fai
%J Journal of Quantum Information Science
%P 89-102
%@ 2162-576X
%D 2015
%I Scientific Research Publishing
%R 10.4236/jqis.2015.53011
%X We calculate the work done by a Landau-Zener-like dynamical field on two- and three-level quantum system by constructing a quantum power operator. We elaborate a general theory applicable to a wide range of closed-quantum system. We consider the dynamics of the system in the time domain ]-<em>t</em><sub>LZ</sub>,<em>t</em><sub>LZ</sub>[ (where   is the LZ transition time in the sudden limit) where the external pulse changes its sign and its action becomes relevant. The statistical work is evaluated in a period [0,<i>T</i>] where <em>T</em> ˇÜt<sub>LZ</sub>. Our results are observed to be in good qualitative agreement with known results.
%K Power Operator
%K Statistical Work
%K Landau-Zener Model
%K Level Crossing
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=59629