Classical analogue of electromagnetically induced transparency with a metal-superconductor hybrid metamaterial
Artikel i vetenskaplig tidskrift, 2011

Metamaterials are engineered materials composed of small electrical circuits producing novel interactions with electromagnetic waves. Recently, a new class of metamaterials has been created to mimic the behavior of media displaying electromagnetically induced transparency (EIT). Here we introduce a planar EIT metamaterial that creates a very large loss contrast between the dark and radiative resonators by employing a superconducting Nb film in the dark element and a normal-metal Au film in the radiative element. Below the critical temperature of Nb, the resistance contrast opens up a transparency window along with a large enhancement in group delay, enabling a significant slowdown of waves. We further demonstrate precise control of the EIT response through changes in the superfluid density. Such tunable metamaterials may be useful for telecommunication because of their large delay-bandwidth products.

metamaterial

slow light

superconductor

electromagnetically induced transparency

Författare

Cihan Kurter

Philippe Tassin

Chalmers, Teknisk fysik, Kondenserade materiens teori

Lei Zhang

Thomas Koschny

Alexander P. Zhuravel

Alexey V. Ustinov

Steven M. Anlage

Costas M. Soukoulis

Physical Review Letters

0031-9007 (ISSN) 1079-7114 (eISSN)

Vol. 107 4 043901-

Styrkeområden

Nanovetenskap och nanoteknik

Ämneskategorier

Atom- och molekylfysik och optik

Annan elektroteknik och elektronik

Den kondenserade materiens fysik

DOI

10.1103/PhysRevLett.107.043901

Mer information

Skapat

2017-10-07