Single Photon Adiabatic Wavelength Converter on a Silicon Chip

目的：本项目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。智力优势：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比特。在这样的系统中，希望具有利用光波长转换在信息信道之间传送单光子的能力。然而，波长转换传统上需要非线性效应，这固有地意味着必须存在处于另一频率的非常大量的光子，以便辅助单个光子的转换。相比之下，本项目的目标是展示基于最近展示的低功率线性绝热波长转换过程的硅芯片上的单光子波长转换器。从理论上讲，这个过程具有100%的转换效率，因此，每个光子都会改变其能量。这一过程将通过对片上硅谐振腔进行低功率光或电调谐来实现。更广泛的影响：拟议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。该设备将导致复杂的量子集成电路，用于研究量子计算和光物质相互作用。此外，该项目将通过让本科生参与所需的高级设计课程序列来产生重大的教育影响。目前的研究成果也将被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和小公司的其他研究人员。

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.