论文标题
量子元面的非偏端总横截面
Nonreciprocal total cross section of quantum metasurfaces
论文作者
论文摘要
源自非线性散射器之间的经典相互作用的非股展一直在吸引量子社区的越来越多的关注，提供了一种有前途的工具来控制激发转移，以进行量子信息处理和量子计算。在这项工作中，我们探讨了一对由两个平行的两级原子的平行周期性阵列形成的一对量子跨面的可能性。我们表明，可以通过控制原子的位置及其过渡频率来在此类非线性系统中获得较大的非转化响应，而无需要求放置原子的环境是非偏次的。我们证明了这种效应与缓慢衰减的黑暗状态的人群的联系，这对于获得大型的非近代反应至关重要。
Nonreciprocity originating from classical interactions among nonlinear scatterers has been attracting increasing attention in the quantum community, offering a promising tool to control excitation transfer for quantum information processing and quantum computing. In this work, we explore the possibility of realizing largely nonreciprocal total cross sections for a pair of quantum metasurfaces formed by two parallel periodic arrays of two-level atoms. We show that large nonreciprocal responses can be obtained in such nonlinear systems by controlling the position of the atoms and their transition frequencies, without requiring that the environment in which the atoms are placed is nonreciprocal. We demonstrate the connection of this effect with the population of a slowly-decaying dark state, which is critical to obtain large nonreciprocal responses.
