IDR: Collaborative Research: Novel Photonic Materials and Devices based on Non-Hermitian Optics

目的：本工作的目的是开发新型光子器件和人工材料-适当地设计以显示自然界中未发现的特性。我们将采用一种利用整个复介电常数平面的新方法。这将通过明智地控制吸收和增益来实现，特别是在基于半导体晶圆的集成光学布置中。为了完成这项任务，一个由工程师、物理学家、材料科学家和数学家组成的跨学科团队已经组建起来，他们的技能和知识互补。智力价值：这项活动的智力价值是基于利用时空反射的光学的最新发展。这种排列中涉及的非厄米势打破了空间对称性，从而允许波区分左右。这导致了在空间和时间上的非互反波行为。该团队将研究：(i)线性和非线性非厄米结构中的非互反光传播，作为实现紧凑光学隔离器和环行器的手段；（ii）片上波束偏转器的波前和能量传播；（iii）通过控制光的传播特性来制造非厄米吸收器和放大器；（iv）非厄米光栅诱导的单向不可见性。更广泛的影响：这项工作的更广泛的影响是教育学生明天开车吗？美国在光子学方面的进步。他们将接受建模、材料生长、器件制造和光学表征方面的培训，并通过与合作机构的同行进行不断的互动。该团队将组织研讨会，让整个光子学社区参与到非厄米光学中。

Objective:The objective of this work is to develop novel photonic devices and artificial materials-appropriately engineered to display properties not found in nature. A new approach that exploits the complex dielectric permittivity plane in its entirety will be employed. This will be achieved by judiciously controlling both absorption and gain-especially in integrated optical arrangements based on semiconductor wafers. To carry out this task, an interdisciplinary team composed of engineers, physicists, material scientists, and mathematicians with complementary skills and know-how has been assembled. Intellectual Merit:The intellectual merit of this activity is based on very recent developments in optics that make use of space-time reflection. The non-Hermitian potentials involved in such arrangements break the spatial symmetry, thus allowing a wave to distinguish left from right. This leads to non-reciprocal wave behavior in both space and time. The team will investigate: (i) non-reciprocal light propagation in linear and nonlinear non-Hermitian structures as a means to realize compact optical isolators and circulators; (ii) wavefront and energy propagation for on-chip beam deflectors; (iii) non-Hermitian absorbers and amplifiers by manipulating the propagation properties of light; and (iv) unidirectional invisibility induced by non-Hermitian gratings. Broader Impact:The broader impact of this work will be on educating students to drive tomorrow?s advancements in photonics. They will be trained in modeling, material growth, device fabrication, and optical characterization and through constant interactions with their peers at the partner institutions. The team will organize workshops to engage the photonics community at large in non-Hermitian optics.