Demonstration of Universal Logic Gates in Optical Microresonators.

回声走廊模式光学微谐振器允许在以前无法达到的低功率下实现非线性光学现象。因此，它们是一个令人兴奋的研究领域--既提供了基础物理研究的机会，也提供了技术平台。光学计算的概念寻求用光学元件取代现代计算机中的电子元件。据预测，光学领域可用的较高带宽将显著提高某些问题的处理速度，特别是在机器学习和数据科学方面。由于需要组合多个输入信号，计算是一个本质上是非线性的问题，而光学计算由于难以处理光学中的非线性而受到阻碍。因此，光学微谐振器是制作光学逻辑门的一种很有前途的竞争者。本文详细介绍了光学微谐振器中逻辑门的实现。首先，讨论了这一理论，最终设计了利用克尔非线性来执行逻辑运算的门。随后，在给出结果之前，讨论了实验装置和考虑因素，演示了光学逻辑。

Whispering gallery mode optical microresonators allow the realisation of nonlinear optical phenomena at previously unattainably low powers. Accordingly, they are an exciting area of research - providing both opportunities for research into fundamental physics, and technological platforms. The concept of optical computing seeks to replace the electronic components seen in modern computers with optical ones. It is predicted that the higher bandwidth available in optics will lead to significant improvements in processing speeds for certain problems, particularly in machine learning and data science. Requiring the combination of multiple input signals, computation is an intrinsically nonlinear problem and optical computing has been hindered by the diffculty of serving nonlinearities in optics. For this reason, optical microresonators are a promising contender for fabricating optical logic gates. This report details the realisation of a logic gate in an optical microresonator. First, the theory is discussed, culminating in the designs of gates that utilise the Kerr nonlinearity to execute logical operation. Subsequently, the experimental setup and considerations are discussed before the results are presented, demonstrating optical logic.