Journal
PHYSICAL REVIEW B
Volume 93, Issue 12, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.93.125106
Keywords
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Funding
- EPSRC through the QUEST program grant [EP/I034548/1]
- QinetiQ
- EPSRC through the Industrial CASE scheme [08000346]
- U. S. Department of Energy
- Research Corporation for Science Advancement through a Cottrell Award
- EPSRC [EP/I034548/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/I034548/1] Funding Source: researchfish
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It is shown theoretically that a one-dimensional crystal with time-reversal and particle-hole symmetries is characterized by a topological invariant that predicts the existence or otherwise of edge states. This is confirmed experimentally through the construction and simulation of a photonic crystal analog in the microwave regime. It is shown that the edge mode couples to modes external to the photonic crystal via a Fano resonance.
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