Generalized rotating-wave approximation for arbitrarily large coupling
Generalized rotating-wave approximation for arbitrarily large coupling
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DOI：
10.1103/physrevlett.99.173601
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发表时间：
2007-10-26
影响因子：
8.6
通讯作者：
Irish, E. K.
中科院分区：
文献类型：
--
作者：
Irish, E. K.
本文给出了单模自旋玻色子哈密顿量的广义行波近似。它示出，执行一个简单的基础的变化之前，消除非共振项的结果在一个显着更准确的表达系统的能级。广义近似适用于耦合强度的所有值和广泛的失谐值，并可能在固态实验中找到应用。
A generalized version of the rotating-wave approximation for the single-mode spin-boson Hamiltonian is presented. It is shown that performing a simple change of basis prior to eliminating the off-resonant terms results in a significantly more accurate expression for the energy levels of the system. The generalized approximation works for all values of the coupling strength and for a wide range of detuning values, and may find applications in solid-state experiments.