Rotation operator approach for the dynamics of non-dissipative multi-state Landau-Zener problems: Exact solutions

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• 作者：M.E. Ateuafack^a ; J.T. Diffo^a ; ^b ; ^{jauresdiffo@gmail.com} ; ^{diffojaures@yahoo.com} ; L.C. Fai^a ; M.N. Jipdi^a
• 关键词：Spin ; Colored noise ; Landau&ndash ; Zener transitions ; Multistates system ; Stokes constants ; Coherence
• 刊名：Physica E: Low-dimensional Systems and Nanostructures
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：85
• 期：Complete
• 页码：74-81
• 全文大小：3807 K
• 卷排序：85

文摘

Exact solutions for the dynamics of the noisy LZ model are derived. The solutions are obtained regardless the initial configuration of the system. Stokes constants are expressed through the parabolic cylinder function. Euler angles are derived if the 3D-noise correlation function is given. Use states of an atom to store information reduce the decoherence effect.