Dear All, I’m forwarding the announcement of a seminar next week. Naomichi Hatano
> Dear all,
>
> Next Wednesday (12/14) our group seminar will be given by Mr. Kazuki Sone (U. Tokyo).
> The seminar will be held after the progress report of Umekawa-kun.
>
> We will start the seminar at 14:30.
>
> The details of the seminar are the following:
>
> ======================================
>
> Speaker: Kazuki Sone (U. Tokyo, Dept. of Applied Physics)
>
> Title: Non-Hermitian exceptional edge mode and its application to photonic and biological systems
>
> Abstract:
> Band topology has attracted much attention due to its correspondence to the existence of robust boundary modes. Recent studies have extended the notion of topology to non-Hermitian systems. Such extension of band topology has revealed unique non-Hermitian topological phenomena such as exceptional points and non-Hermitian skin effects. In addition, non-Hermitian topological systems are abundant in both classical and quantum systems and thus have enriched the application of topological physics.
> In this talk, I introduce unconventional gapless modes termed as exceptional edge modes, which are unique to non-Hermitian systems. Such gapless boundary modes utilize the nontrivial topology of exceptional points and can robustly exist even with a trivial bulk. Thus, the existence of the exceptional edge modes can imply the breakdown of the bulk-boundary correspondence, while it can broaden the range of physical systems that can exhibit robust boundary modes. I also discuss the application of exceptional edge modes to topological lasers and non-Hermitian topology in active matter.
>
> Date & time: 14 December 2022 (14:30-)
>
> Place: Main seminar room (IIS Kashiwa, 3rd floor)
>
> =====================================
>
> The seminar will be also on line (zoom):
>
> —————————————————————-
>
> Zoomミーティングに参加する
> u-tokyo-ac-jp.zoom.us/j/89168968336?pwd=RUtrbEJ4Ym92NTNHc2F3WlZOS2llQT09
>
> ミーティングID: 891 6896 8336
> パスコード: 604135
>
> —————————————————————-
>
> Best regards,
> Ken
>
> —
> Ken Imura
>
> Researcher, PhD
> Institute of Industrial Science, The University of Tokyo
> 5-1-5 Kashiwanoha, Kashiwa 277-8574, Japan
> Web: hatano-lab.iis.u-tokyo.ac.jp/imura
> Tel: +81-4-7136-6977
>
>
>
———————–
Naomichi Hatano
Institute of Industrial Science, University of Tokyo
Kashiwanoha 5-1-5, Kashiwa, Chiba 277-8574, JAPAN
Phone: +81-4-7136-6961
Fax: +81-4-7136-6978
hatano-lab.iis.u-tokyo.ac.jp/hatano/
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