Experimental observation of superluminal group velocities in bulk two-dimensional photonic bandgap crystals
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🪐 quant-ph
keywords
groupvelocitiesbandgapbulkcrystalsphotonicsuperluminaltwo-dimensional
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We have experimentally observed superluminal and infinite group velocities in bulk hexagonal two-dimensional photonic bandgap crystals with bandgaps in the microwave region. The group velocities depend on the polarization of the incident radiation and the air-filling fraction of the crystal.
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