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
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Symmetry analysis and Furusaki-Tsukada calculations show that tuning exchange-field directions, Rashba SOC, and d-wave lobe orientations in Josephson junctions enhances nonreciprocity in the current-phase relation by more than 40%, with asymmetric Andreev bound states driving the diode effect.
Rashba spin-orbit coupling is presented as essential for engineering topological superconductors with Majorana zero modes that could support protected qubits.
citing papers explorer
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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
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Anomalous and diode Josephson effect in junctions with inhomogeneous ferromagnetic barrier and interfacial Rashba spin-orbit coupling
Symmetry analysis and Furusaki-Tsukada calculations show that tuning exchange-field directions, Rashba SOC, and d-wave lobe orientations in Josephson junctions enhances nonreciprocity in the current-phase relation by more than 40%, with asymmetric Andreev bound states driving the diode effect.
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Rashba spin-orbit coupling and artificially engineered topological superconductors
Rashba spin-orbit coupling is presented as essential for engineering topological superconductors with Majorana zero modes that could support protected qubits.