2020年第81回応用物理学会秋季学術講演会

講演情報

一般セッション(口頭講演)

4 JSAP-OSA Joint Symposia 2020 » 4.2 Photonics Devices, Photonic Integrated Circuit and Silicon Photonics

[9a-Z23-1~6] 4.2 Photonics Devices, Photonic Integrated Circuit and Silicon Photonics

2020年9月9日(水) 10:00 〜 12:00 Z23

岩本 敏(東大)、西山 伸彦(東工大)

11:30 〜 12:00

[9a-Z23-6] [INVITED]Progress in Linear Optical Operation Gates and Circuits in Si Photonics Towards Photoelectronic Converged Accelerators

Shota Kita1,2、Kengo Nozaki1,2、Kenta Takata1,2、Akihiko Shinya1,2、Guangwei Cong3、Noritsugu Yamamoto3、Keijiro Suzuki3、Yuriko Maegami3、Morifumi Ohno3、Koji Yamada3、Masaya Notomi1,2 (1.NTT Nanophotonics Center、2.NTT BRL、3.AIST)

キーワード:linear optical logic gates, photonic digital analog converters, nanophotonics

Our group has been consistently developing nanophotonic components to realize more dense photoelectronic converged accelerators. And around 5 years ago, our group has also suggested “photonic pass gate logic” to achieve ultralow latency operations. The minimization of the photonic pass length is required to realize ultralow latency, so it is suitable to utilize nanophotonics.
At the same time, nonlinear conversions are essential for universal operations. However, there are still many drawbacks in nonlinear photonic gates in terms of length (latency) and loss. So our group has focused on linear optical components because they can perform almost energy less analog linear conversions. In this talk, we summarize the topics for optical Boolean logic operation using Si “psai” gates and digital/analog conversion based on circuit topology, which could be one of key elements to justify the photonic analog processing (multiply-accumulate operations) in artificial neural networks.