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

这项提案的目的是开发新的光子器件和人工材料，适当地设计，以显示在自然界中没有发现的属性。将采用一种新的方法，利用复介电常数平面的整体。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片的集成光学装置中。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，他们拥有互补的技能和专业知识。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易波行为。该小组将调查：（i）线性和非线性非厄米结构中的非互易光传播，作为实现紧凑的光学隔离器和环行器的手段;（ii）用于片上光束偏转器的波前和能量传播;（iii）通过操纵光的传播特性的非厄米吸收器和放大器;以及（iv）由非厄米光栅引起的单向不可见性。这项工作的更广泛影响将是教育学生明天开车？在光子学上的进步。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不断互动。该团队将组织研讨会，让整个光子学社区参与非厄米光学。

The objective of this proposal 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. 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. 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.