Excitable logic for photonic information processing

光子信息处理的可兴奋逻辑

• 批准号: 543613-2019
• 负责人: Shastri, Bhavin
• 金额: $ 1.82万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=680692
• 关键词: Excitable; logic; photonic; information; processing

Electronic systems are ubiquitously employed in highly-demanding data processing and computing applications; however, they are prone to numerous drawbacks related to security. While a scalable, general purpose digital optical computing processor has remained elusive, the demonstration of reconfigurable all-optical gates for specialized tasks such as in secure computing is attractive because optical devices neither generate an electromagnetic (EM) signature which can be observed from a distance nor can be jammed by external EM interference, hence posing less risk than their electronic counterparts. There is a pressing need to investigate optical logic using a single device, which is robust enough to operate in a rugged military environment while having the potential to increase computing speed. The objective of this project is to design, build and demonstrate a reconfigurable optical gate with a single device for ultrafast information processing. Specifically, the goal is to develop a reconfigurable AND/NOT logic device by engineering the dynamics of a graphene-based laser based on the principle of excitability (a non-linear dynamical mechanism underlying all-or-none responses to small perturbations). Excitability has been shown to enable thresholding and cascadability of photonic devices, while graphene has unique optical properties that are particularly useful in the context of processing, including a ultrafast response time, wideband frequency tunability, and a tunable modulation depth. Successful implementation of a reconfigurable optical logical gate with a single device, as envisioned here, would provide the fundamental technology to build larger scale networks that operate on principles of excitable logic, which could have potential applications in electronic warfare, sensing, physical layer security, military computing, and space applications.

电子系统在高要求的数据处理和计算应用中无处不在；然而，它们容易出现许多与安全性相关的缺点。虽然可扩展的通用数字光学计算处理器仍然难以捉摸，但用于安全计算等特殊任务的可重构全光门的演示是有吸引力的，因为光学设备既不会产生可以从远处观察到的电磁（EM）签名，也不会被外部EM干扰干扰，因此比电子设备带来的风险更小。迫切需要研究使用单个设备的光学逻辑，该设备足够坚固，可以在崎岖的军事环境中运行，同时具有提高计算速度的潜力。该项目的目标是设计，构建和演示一个可重构的光门，用于超快速信息处理。具体来说，目标是通过基于激发性原理（对小扰动的全或无响应的非线性动力学机制）设计基于石墨烯的激光器的动力学来开发可重构的AND/NOT逻辑器件。激发性已被证明能够实现光子器件的阈值和级联性，而石墨烯具有独特的光学特性，在加工背景下特别有用，包括超快的响应时间、宽带频率可调性和可调的调制深度。正如本文所设想的那样，单器件可重构光逻辑门的成功实现将为构建基于可激发逻辑原理的更大规模网络提供基础技术，这可能在电子战、传感、物理层安全、军事计算和空间应用中具有潜在的应用。