All-Optical Switching and Strong Coupling Using Tunable Whispering-Gallery-Mode Resonators

使用可调谐回音壁模式谐振器的全光开关和强耦合

• 批准号: 52425255
• 负责人: Professor Dr. Arno Rauschenbeutel
• 金额: --
• 依托单位: Institut für Physik
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2007
• 资助国家: 德国
• 起止时间: 2006-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/52425255?language=en
• 关键词: Optical; Switching; Strong; Coupling; Using

All-optical switching is a long-standing goal of photonics. The manipulation of light with light is in general possible via the nonlinear optical response of matter. The effect of this nonlinear light-matter interaction can be amplified be means of optical resonators. This amplification becomes higher the smaller the mode volume V and the higher the Q factor of the resonator are. While a number of resonator concepts exist that offer high values of Q / V, coupling of light into and out of high Q resonators is often inefficient. The situation is different for high-g whispering-gallery-mode resonators, where tapered fiber coupling allows coupling efficiencies exceeding 99 %. We propose the use of the tunable whispering-gallerymode resonators that have been developed during the first funding period of this Research Unit for such all-optical switching applications. The experiments shall on the one hand be carried out using the "bulk" nonlinear response of surface-ads orbed molecules that interact with the evanescent field of the resonator modes. On the other hand, we seek to carry out experiments that exploit the nonlinear response of single atoms in the so-called "strong coupling regime". This approach is motivated by the perspective of realizing a nonlinear interaction at the level of single photons. If such a photon-photon interaction could be realized in the strong coupling regime, this would open the route towards important applications in the framework of quantum communication and quantum information processing.

全光开关是光子学的一个长期目标。通过物质的非线性光学响应，用光对光的操纵通常是可能的。这种非线性光-物质相互作用的效应可以通过光学谐振腔来放大。模式体积V越小，谐振器的Q因子越高，该放大率越高。虽然存在提供高Q / V值的许多谐振器概念，但是将光耦合进和耦合出高Q谐振器通常是低效的。这种情况是不同的高g回音壁模式谐振器，锥形光纤耦合允许耦合效率超过99%。我们建议使用的可调谐whispering-gallerymode谐振器，已开发的第一个资金期间，本研究单位的全光开关应用。实验将在一方面使用与谐振器模式的渐逝场相互作用的表面吸附分子的“体”非线性响应来进行。另一方面，我们试图进行实验，利用单原子在所谓的“强耦合制度”的非线性响应。这种方法的动机是在单光子水平上实现非线性相互作用的观点。如果这样的光子-光子相互作用能够在强耦合机制中实现，这将为量子通信和量子信息处理框架中的重要应用开辟道路。