Chiral and nonorthogonal eigenstate pairs in open quantum systems with weak backscattering between counterpropagating traveling waves
Chiral and nonorthogonal eigenstate pairs in open quantum systems with weak backscattering between counterpropagating traveling waves
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DOI：
10.1103/physreva.89.012119
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发表时间：
2014-01
影响因子：
2.9
通讯作者：
J. Wiersig
中科院分区：
文献类型：
--
作者：
J. Wiersig
研究了顺时针和逆时针行波弱耦合的开放量子系统中能量本征态的性质。我们证明了在相当一般的条件下，这种系统的能量本征态可以出现在非正交的、共传播的行波态对中。讨论了有效非厄米哈密顿量与异常点的关系。
We study the properties of energy eigenstates in open quantum systems in which clockwise and counterclockwise traveling waves are weakly coupled. We show that under rather general conditions the energy eigenstates of such systems can appear in pairs of nonorthogonal, copropagating traveling-wave states. The relation to exceptional points of the effective non-Hermitian Hamiltonian is discussed.