Two-photon coincidence statistics in terahertz light from a cavity-embedded 2H-NbSe2 superconductor provide a diagnostic for ultrastrong Higgs-polariton coupling that is missing in total photon counts.
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Time-reversal symmetry broken superconductors admit a type II Lifshitz invariant that renders the Higgs mode optically active in conductivity spectra, with a full classification of allowed magnetic point group corepresentations.
Microwave irradiation of asymmetric transparent Josephson junctions produces resonant enhancement of the second harmonic in both the equilibrium current-phase relation and the AC Josephson current, with sign and frequency dependence that differ from standard expectations and thereby reveal the Higgs
citing papers explorer
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Ultrastrong Coupling Signatures in Photon Statistics from Terahertz Higgs-Polaritons
Two-photon coincidence statistics in terahertz light from a cavity-embedded 2H-NbSe2 superconductor provide a diagnostic for ultrastrong Higgs-polariton coupling that is missing in total photon counts.
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Type II Lifshitz invariant and optically active Higgs mode in time-reversal symmetry broken superconductors
Time-reversal symmetry broken superconductors admit a type II Lifshitz invariant that renders the Higgs mode optically active in conductivity spectra, with a full classification of allowed magnetic point group corepresentations.
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Signatures of superconducting Higgs mode in irradiated Josephson junctions
Microwave irradiation of asymmetric transparent Josephson junctions produces resonant enhancement of the second harmonic in both the equilibrium current-phase relation and the AC Josephson current, with sign and frequency dependence that differ from standard expectations and thereby reveal the Higgs