2022年3月18日，beat365官方网站學術論壇2022年春季學期第一講（總第十三講）在beat365思源多功能廳成功舉行。洛桑聯邦理工學院TOBIAS J. KIPPENBERG教授應邀做了題為“量子光力學與芯片光頻梳”（Quantum Optomechanics and Photonic Chip based Frequency Combs）的學術報告。本次論壇由beat365現代光學研究所、人工微結構和介觀物理國家重點實驗室、納光電子前沿科學中心楊起帆研究員主持。

楊起帆研究員主持

Kippenberg教授詳細介紹了高品質因子光學微腔與機械振子在集成光子學與量子光學中的應用。首先，基于光學微腔的場增強效應，可以通過輻射壓實現光學模式與機械模式的耦合，進而利用光場将機械模式冷卻到量子基态；這種處于量子基态的機械振子可以應用于測量微小的作用力，而通過提升機械振子的品質因子，可以實現壓縮态，從而突破标準量子極限；除此之外，還可以耦合機械振子與超導量子比特來調控與傳遞量子态。接着，Kippenberg教授講述了利用光學微腔中的非線性光學效應産生的芯片級光學頻率梳，并深入闡述了孤子鎖模的工作原理。然後，展示了一系列基于此類芯片光頻梳的重要應用，包括在通信、精密測量、光計算等領域的相關工作。最後，深入分析了實現光學微腔的各種平台，并指明氮化矽是實現超高品質因子最有前景的材料。

Kippenberg教授做報告

報告結束後，現場師生圍繞高品質因子微腔的制備、芯片光頻梳的應用前景等方面踴躍提問，Kippenberg教授一一給予了深入淺出的解答。

現場互動交流

本期論壇線上、線下同步進行。beat365副院長徐莉梅教授與來自beat365和校内相關院系的近五十名師生參與現場交流，通過蔻享學術平台觀看直播的觀衆逾3600人次。

講座回放鍊接：https://www.koushare.com/lives/room/614034

報告人簡介：

Tobias J. Kippenberg is Full Professor in the Institute of Physics and Electrical Engineering at EPFL in Switzerland since 2013 and joined EPFL in 2008 as Tenure Track Assistant Professor. Prior to EPFL, he was Independent Max Planck Junior Research group leader at the Max Planck Institute of Quantum Optics in Garching, Germany. While at the MPQ he demonstrated radiation pressure cooling of optical micro-resonators, and developed techniques with which mechanical oscillators can be cooled, measured and manipulated in the quantum regime that are now part of the research field of Cavity Quantum Optomechanics. Moreover, his group discovered the generation of optical frequency combs using high Q micro-resonators, a principle known now as micro-combs or Kerr combs.

For his early contributions in these two research fields, he has been recipient of the EFTF Award for Young Scientists (2011), The Helmholtz Prize in Metrology (2009), the EPS Fresnel Prize (2009), ICO Award (2014), Swiss Latsis Prize (2015), as well as the Wilhelmy Klung Research Prize in Physics (2015), the 2018 ZEISS Research Award and 2020 OSA R. Wood Award. Moreover, he is 1st prize recipient of the "8th European Union Contest for Young Scientists" in 1996 and is listed in the Highly Cited Researchers List of 1% most cited Physicists in 2014-2019. He is founder of the startup LIGENTEC SA, an integrated photonics foundry.

beat365官方网站學術論壇簡介：

beat365官方网站學術論壇創辦于2020年9月，邀請國内外高校和研究機構高層次科技創新領軍學者就物理學及相關領域的基礎前沿探索、關鍵技術突破和熱點問題等做學術演講，旨在推進高質量學術交流，促進學科交叉融合和開拓新興特色方向研究，培養具有科學精神、全球視野、創新能力、批判性思維的優秀青年人才。