通过孪生场实现的光学不可逆性
Optical Indistinguishability via Twinning Fields
摘要：
在这里，我们介绍了孪生场的概念-一个驱动电磁脉冲，诱导从两个不同的材料相同的光学响应。我们表明，对一般的多体系统，孪生场，使系统\emph{optically indistinguishable}总是存在的。导出了该场唯一的条件，并对费米-哈伯德模型的孪生场进行了数值计算。孪生场的普遍存在可能会在非线性光学、材料科学和量子技术等领域带来新的研究方向。
英文摘要：
Here we introduce the concept of the twinning field -- a driving electromagnetic pulse that induces an identical optical response from two distinct materials. We show that for pairs of generic many-body systems, a twinning field which renders the systems \emph{optically indistinguishable} always exists. The conditions under which this field is unique are derived, and this analysis is supplemented by numerical calculations of twinning fields for the Fermi-Hubbard model. The universal existence of twinning fields may lead to new research directions in non-linear optics, materials science, and quantum technologies.
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