Journal
PHYSICAL REVIEW B
Volume 85, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.85.073102
Keywords
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Funding
- Kyoto University [22109004, 22560041]
- Murata Science Foundation
- Japan Society for the Promotion of Science
- Grants-in-Aid for Scientific Research [10J00947, 22109004, 22560041] Funding Source: KAKEN
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We realize variable control of the group delay in an electromagnetically induced transparency-like metamaterial. Its unit cell is designed to have a bright mode and a dark mode. The coupling strength between these two modes is determined by the electromagnetic field gradient. In this metamaterial with field-gradient-induced transparency, the group delay at the transparency frequency can be varied by varying the incident angle of the electromagnetic plane waves. By tilting a single layer of the metamaterial, the group delay of a microwave pulse can be varied between 0.50 and 1.85 ns.
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