Hybrid on-chip quantum photonics combining deterministic telecom single-photon sources, single-photon detectors with ultra-low loss waveguides

混合片上量子光子学将确定性电信单光子源、单光子探测器与超低损耗波导相结合

• 批准号: 469373712
• 负责人: Professor Dr. Peter Michler
• 金额: --
• 依托单位: Institut für Halbleiteroptik und Funktionelle Grenzflächen (IHFG)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/469373712?language=en
• 关键词: Hybrid; chip; quantum; photonics; combining

Integrated photonic quantum technologies represent a promising platform for research fields such as simulation of complex phenomena, quantum sensing and quantum information processing. The current proposal aims at revolutionize these fields by hybrid combination of two of the most appealing platforms for quantum photonics: 1) Semiconductor quantum dots for the on-demand generation of non-classical light states. 2) Silicon-based photonics as a key platform for implementing ultra-low loss circuitry. The proposal will tackle technological aspects, like the realization of a novel optimized combination of multiple photonics and quantum photonics structures, as well as fundamental physics aspects as the generation of multi-photon states employing remote sources. We will investigate the impact of the photonic integrated circuits, their waveguides and active optical elements on the propagation and manipulation of non-classical light states. The IHFG pioneered the realization of QDs emitting single, indistinguishable and entangled photons at telecom wavelength, also showing on-demand operation. The WWU is world leading in the implementation of 3D printed optics and implementation of single-photon detectors on waveguides. We implement and investigate the physics of multi-source experiments with important impact on the achievable scalability and experimental complexity going far beyond current state-of-the-art. Our approach allows to fully optimize the QD-based light sources as well as the Si-based circuitry with no limitations posed by the fabrication processes: the non-classical light source and the silicon photonic logic chip will be fabricated separately, then interfaced via 3D printed single mode waveguides. The goals of the project are:1) Realize bright, wavelength tuneable, sources of non-classical light operating at telecom wavelength: this will be enabled combining advanced growth and deterministic lithography at telecom wavelength, i.e. two capabilities pioneered at the IHFG.2) Implement 3D printed interface couplers for the efficient hybrid integration of QDs with Si-based circuitry.3) Realization of ultra-low loss Si-based photonic circuits specifically designed to operate with non-classical light from telecom-wavelength QDs. This will include waveguides, beam splitters, filters, phase shifters and superconducting single-photon detectors.4) Investigation of the generation of multi-photon states via two-photon interference from remote sources.5) Implementation of multi-source chips in order to demonstrate scalability and experimental complexity beyond current state-of-the-art.6) Implementation of quantum simulation operations, i.e. Boson sampling, with multiple on-demand light sources.Achieving the goals highlighted in this project could have an enormous impact for the future development of the above mentioned quantum technologies and broadening the understanding of several aspects of photonic quantum physics.

集成光子量子技术为复杂现象的模拟、量子传感和量子信息处理等领域的研究提供了一个很有前途的平台。目前的提议旨在通过混合结合两个最具吸引力的量子光子学平台来彻底改变这些领域：1)用于按需生成非经典光态的半导体量子点。2)硅基光子学作为实现超低损耗电路的关键平台。该提案将解决技术方面的问题，如实现多个光子学和量子光子学结构的新的优化组合，以及利用远程源产生多光子状态的基本物理方面。我们将研究光子集成电路及其波导和有源光学元件对非经典光态的传输和操纵的影响。IHFG率先实现了量子点在电信波长发射单一的、不可区分的和纠缠的光子，也显示了按需操作。WWU在实现3D打印光学和在波导上实现单光子探测器方面处于世界领先地位。我们实现并研究了多源实验的物理，对可实现的可扩展性和实验复杂性产生了重要影响，远远超出了当前的最先进水平。我们的方法可以完全优化基于量子点的光源和基于硅基的电路，而不受制造工艺的限制：非经典光源和硅光子逻辑芯片将被分开制造，然后通过3D打印单模波导进行接口。该项目的目标是：1)实现明亮的、波长可调的、工作在电信波长的非经典光源：这将能够结合先进的生长和电信波长的确定性光刻，即IHFG首创的两项能力。2)实现3D打印接口耦合器，用于量子点与硅基电路的高效混合集成。3)实现专为使用电信波长量子点的非经典光操作而设计的超低损耗硅基光子电路。这将包括波导、分束器、滤光器、移相器和超导单光子探测器。4)研究通过远程双光子干涉产生多光子态。5)实现多源芯片，以展示目前最先进的可扩展性和实验复杂性。6)实现量子模拟操作，即玻色子采样，使用多个按需光源。实现本项目中强调的目标将对上述量子技术的未来发展产生巨大影响，并拓宽对光子量子物理的几个方面的理解。