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

这项提议的目标是开发新型的光子设备和人造材料--适当地进行工程，以显示自然界中没有的特性。将采用一种完全利用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片的集成光学装置中。为了执行这项任务，已经组建了一个由工程师、物理学家、材料科学家和数学家组成的跨学科团队，他们拥有互补的技能和诀窍。这项活动的学术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位势打破了空间对称性，从而允许波区分左和右。这导致了空间和时间上的非互易波动行为。该小组将研究：(I)作为实现紧凑型光隔离器和环行器的一种手段的线性和非线性非厄米特结构中的非互易光传输；(Ii)芯片内光束偏转器的波前和能量传输；(Iii)通过操纵光的传输特性来实现非厄米特吸收器和放大器；以及(Iv)由非厄米光栅引起的单向不可见性。这项工作将对教育学生未来驾驶产生更广泛的影响？S在光子学方面取得了进步。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来进行培训。该团队将组织研讨会，让整个光子界参与到非厄米光学中来。

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.