Тип публикации: статья из журнала

Год издания: 2017

Идентификатор DOI: 10.1103/PhysRevLett.118.267401

Аннотация: We consider Bloch bound states in the radiation continuum in periodic arrays of dielectric spheres. It is demonstrated that the bound states are associated with phase singularities of the quasimode coupling strength. That makes the bound states topologically protected and, therefore, robust against any variation of parameters preseПоказать полностьюrving the periodicity and rotational symmetry about the array axis. It is shown that under variation of parameters the bound states can only be destroyed by either annihilation of the topological charge or by migration to the sector of the parametric space where the second radiation channel is open. © 2017 American Physical Society.

Журнал: Physical Review Letters

Выпуск журнала: Vol. 118, Is. 26

Номера страниц: 267401

ISSN журнала: 00319007

Издатель: American Physical Society

• Bulgakov E.N. (Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, Russian Federation, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation)
• Maksimov D.N. (Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, Russian Federation, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation)

• Scopus