Single Photon Adiabatic Wavelength Converter on a Silicon Chip

目的：本课题的目标是展示一种基于经典线性效应的高效单光子波长转换器。知识优势：量子光通信系统有望彻底改变数据的传输和处理方式。在未来，人们希望在各种信息通道中处理量子位。在这样的系统中，利用光波长转换在信息通道之间传输单光子的能力是可取的。然而，波长转换传统上需要非线性效应，这本质上意味着必须存在另一个频率上的大量光子，以协助单个光子的转换。相比之下，本项目的目标是在最近演示的低功耗线性绝热波长转换过程的基础上，在硅芯片上演示单光子波长转换器。理论上这个过程有100%的转换效率，因此，每一个光子都会改变它的能量。该过程将通过片上硅谐振腔的低功率光学或电调谐来实现。更广泛的影响：提出的工作将在量子光学和量子信息系统领域产生广泛的影响。该装置将导致用于研究量子计算和光物质相互作用的复杂量子集成电路。此外，该项目将有显著的教育影响，涉及本科生所需的高级设计课程序列。目前的研究成果也将整合到微系统工程的研究生课程中。最后，开发的制造工艺和实验技术将提供给RIT的其他研究人员和小公司。

Objective: The goal of this project is to demonstrate an efficient single photon wavelength converter based on a classical linear effect.Intellectual Merit:Quantum-optical communication systems have the promise to revolutionize howdata is transmitted and processed. In the future it will be desirable to process qubits in various information channels. In such a system the ability to transfer single photons between information channels using optical wavelength conversion is desirable. However, wavelength conversion has traditionally required a non-linear effect, which inherently means a very large number of photons at another frequency must be present in order to assist the conversion of the single photons. In contrast, the goal of this project is to demonstrate a single photon wavelength converter on a silicon chip based on a recently demonstrated low-power linear adiabatic wavelength conversion process. Theoretically this process has a 100% conversion efficiency, therefore, every single photon will change its energy. The process will be achieved by low-power optical or electrical tuning of an on-chip silicon resonant cavity.Broader Impact:The proposed work will have broad impacts in the fields of quantum optics and quantum information systems. The device will lead to complex quantum integrated circuits for studying quantum computation and light-matter interactions. Furthermore, the project will have significant educational impact by involving undergraduate students in the required senior design course sequence. Current research results will also be integrated into a graduate level course in Microsystems Engineering. Lastly, the developed fabrication processes and experimental techniques will be made available to other researchers at RIT and small companies.