Тип публикации: статья из журнала
Год издания: 2008
Идентификатор DOI: 10.1103/PhysRevA.77.063604
Ключевые слова: Atomic physics, Atoms, Crystal lattices, Optical materials, Standards, Systems analysis, Velocity control, American Physical Society (APS), Drift currents, Master equations, Optical lattices (OL), standard form, Velocity distribution
Аннотация: This paper discusses the master equation approach to the derivation of the Esaki-Tsu equation for drift current. It is shown that the relaxation term in the master equation can be identified by measuring the velocity distribution of the carriers. We also show that the standard form of the relaxation term, used earlier to derive theПоказать полностьюEsaki-Tsu equation, predicts unphysical velocity distribution. We suggest a more elaborate relaxation term, which is argued to correctly capture the effect of a bosonic bath in experiments on atomic current in optical lattices.
Журнал: PHYSICAL REVIEW A
Выпуск журнала: Vol. 77, Is. 6
Номера страниц: 063604
ISSN журнала: 10502947
Место издания: COLLEGE PK
Издатель: AMER PHYSICAL SOC