Integrated Nonlinear Phononic Circuits with Optomechanical Interface

INPhO的主要目标是设计、制造和验证用于千兆赫频率参数信息处理的密集集成非线性声子电路，并配备光机械接口。为此，我们利用独特的实验混合架构，将表面声波（saw）的高工作频率和纳米机械谐振器的非线性高质量因子模式与可以说是最先进的光学活性纳米系统之一，即外延半导体量子点（QDs）相结合。因此，INPhO将通过开发一套数值和实验工具，允许(i)深入研究由saw接口的非线性机械谐振器，以及（ii）优化它们与量子点的光力学耦合，以设计可调谐非线性声子电路元件与集成光学读出相结合。这些集成可编程元件的非线性片上光子-声子互连将被用来推动纳米力学参数逻辑的边界到千兆赫兹域。INPhO将建立在非线性机械模态相互作用的精心工程上，以实现参数控制方案并演示比特翻转，作为第一个概念验证的单比特逻辑门。该项目的最终目标是通过设计和制造多谐振腔声子电路来证明所提出架构的可扩展性。该器件将包含耦合和可编程非线性声子元件，并与用于光机械读出的先进光子电路协集成。他们将说明所提出的平台打开的视角，以产生基于机械逻辑的具有射频到光学转导的设备。这些光机械界面非线性集成声子电路的实现建立在法国和德国合作伙伴besanon和m<e:1> nster互补专业知识的独特结合之上。WWU合作伙伴掌握并贡献了量子点异质结构在SAW衬底上的异质集成。FEMTO-ST合作伙伴在设计和制造先进的无源声子器件方面拥有长期的匹配专业知识，可在高度耦合的压电材料上定位和引导saw。INPhO中独特的互补技术知识的捆绑允许在统一的平台上前所未有地结合出色的声子和光力学特性，这是单片方法无法实现的。通过开发尖端的混合集成声子电路和器件，INPhO将为电子-光子-声子经典信息和通信技术的新范式铺平道路。INPhO平台将非线性声子电路元件与最好的固态量子发射器之一相结合，也为混合量子技术的新兴领域开辟了深远的前景。

The primary objective of INPhO is the design, fabrication and validation of densely integrated nonlinear phononic circuits for parametric information processing at gigahertz frequencies equipped with an optomechanical interface. To this end, we take advantage of a unique experimental hybrid architecture that combines the high operation frequencies of surface acoustic waves (SAWs) and the nonlinear high-quality factor modes of nanomechanical resonators with one of the arguably most advanced optically active nanosystem, i.e. epitaxial semiconductor quantum dots (QDs). INPhO will thus see through the development of a set of numerical and experimental tools allowing for (i) a thorough investigation of nonlinear mechanical resonators interfaced by SAWs and (ii) for an optimization of their optomechanical coupling to QDs, in view of designing tunable nonlinear phononic circuit elements combined with an integrated optical read-out. These nonlinear, on-chip photonic-phononic interconnects integrating programmable elements will be harnessed to push the boundaries of nanomechanical parametric logic to the gigahertz domain. INPhO will build on careful engineering of nonlinear mechanical modal interactions to implement parametric control schemes and demonstrate BIT-flipping, as a first proof-of-concept single-bit logic gate. The final goal of the project lies in the demonstration of the scalability of the proposed architecture through the design and fabrication of multi-resonator phononic circuits. The devices will encompass coupled and programmable nonlinear phononic elements co-integrated with advanced photonic circuitry for opto-mechanical readout. They will illustrate the perspectives opened by the proposed platform to yield mechanical logic-based devices with radiofrequency-to-optical transduction. The implementation of these optomechanically-interfaced nonlinear integrated phononic circuits builds upon the unique combination of the complementary expertise of the French and German partners at Besançon and Münster. The WWU partner masters and contributes the heterointegration of QD heterostructures onto SAW substrates. The FEMTO-ST partner has long-standing matching expertise in the design and fabrication of advanced, yet passive phononic devices to localize and guide SAWs on highly coupled piezoelectric materials. The unique bundling of complementary technological know-hows in INPhO allows for an unprecedented combination of both outstanding phononic and optomechanical properties on a unified platform which are out-of-reach in a monolithic approach. By developing cutting-edge hybrid integrated phononic circuits and devices, INPhO will pave the way towards new paradigms for electronic-photonic-phononic classical information and communication technologies. The INPhO platform, combining nonlinear phononic circuit elements with one of the best solid-state quantum emitter also open far-reaching prospect in the emerging field of hybrid quantum technologies.