Publications by authors named "Giannis G Paschos"
Article Synopsis
- High sensitivity and quality-factor are essential for excellent performance in photonic biosensors, but achieving both simultaneously is challenging due to conflicting requirements for optical field confinement and light-biomolecule interactions.* -
- A new approach is introduced by embedding a nanophotonic metasurface within a micro vertical cavity, creating a metacavity biosensor that uses the analyte solution for enhanced light-analyte interaction.* -
- The developed metacavity biosensor shows impressive results with a quality-factor of 4140 and high sensitivity (450 nm RIU), enabling effective detection of SARS-CoV-2 with a limit of 119 viral copies per mL.*
We report on the experimental realization and characterization of a qubit analog with semiconductor exciton-polaritons. In our system, a polaritonic condensate is confined by a spatially patterned pump laser in an annular trap that supports energy-degenerate vortex states of the polariton superfluid. Using temporal interference measurements, we observe coherent oscillations between a pair of counter-circulating vortex states coupled by elastic scattering of polaritons off the laser-imprinted potential.
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