[Landau ITP Seminars] Fwd: [ITP Staff] семинар 6 сентября

[Serge Krashakov]

В завтрашней программе произошли изменения: объявленный доклад состоится 
не в 11:30, а в 16:00


-------- Перенаправленное сообщение --------
Тема: 	[ITP Staff] семинар 6 сентября
Дата: 	Thu, 5 Sep 2019 10:02:17 +0300
От: 	Igor Burmistrov <burmi at itp.ac.ru>
Кому: 	staff at itp.ac.ru



Уважаемые коллеги,

    в пятницу 6 сентября в 16:00 в институте состоится доклад:

The wonderful world of flatbands

Sergej Flach

Certain lattice wave systems in translationally invariant settings have 
one or more spectral bands that are strictly flat or independent of 
momentum in the tight binding approximation, arising from either 
internal symmetries or fine-tuned coupling. These flat bands display 
remarkable strongly interacting phases of matter. Originally considered 
as a theoretical convenience useful for obtaining exact analytical 
solutions of ferromagnetism, flat bands have now been observed in a 
variety of settings, ranging from electronic systems to ultracold atomic 
gases and photonic devices. I will review the design and implementation 
of flat bands and chart future directions of this exciting field. In 
particular I will focus on the field of photonic lattices. Flatband 
photonic lattices consist of arrays of coupled waveguides or resonators 
where the peculiar lattice geometry results in at least one completely 
flat or dispersionless band in its photonic band structure. Although 
bearing a strong resemblance to structural slow light, this independent 
research direction is instead inspired by analogies with “frustrated” 
condensed matter systems. In this talk, I will critically analyze the 
research carried out to date, discuss how this exotic physics may lead 
to novel photonic device applications, and chart promising future 
directions in theory and experiment.


Игорь.

_____________________________________________________________________________

Dr.Sc. Igor S. Burmistrov
Deputy Head
L.D. Landau Institute for Theoretical Physics
142432 Russia, Moscow region, Chernogolovka, acad. Semenov prosp., 1a

tel./fax: +7495 7029317 mob.: +7909 9884331 (Russia)
e-mail: burmi at itp.ac.ru <mailto:burmi at itp.ac.ru>http://burmi.itp.ac.ru   
   skype: igor.burmistrov

_____________________________________________________________________________






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