Quantum stochastic differential equations: an application to the electron shelving effect

作者：Alberto Barchielli · 发表于：Journal of Physics A Mathematical and General · 年份：1987 · DOI：10.1088/0305-4470/20/18/034 · 被引用次数：44 · 研究领域：Quantum Information and Cryptography、Advanced Thermodynamics and Statistical Mechanics、Quantum Mechanics and Applications

By means of a physically interesting example, it is shown how the mathematical theory of quantum stochastic calculus can be used in modelling physical systems. The example is the so-called electron shelving effect. The fluorescent light emitted by a single atom or ion presents periods of darkness if two transitions, one weak and one strong, are simultaneously driven. By a previously developed theory of counting processes, based on quantum stochastic differential equations, the full statistics of the emitted photons is obtained. In particular, the results on the duration of bright and dark periods, previously obtained by Cohen-Tannoudji and Dalibard (1986), are completely confirmed.