Tilted polarization stripes in a quadratic crystal create an effective gauge field, and numerical simulations report stable chiral solitons whose fundamental and second-harmonic parts carry opposite energy currents.
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Chiral solitons in quadratic quasi-phase-matched photonic crystals
Tilted polarization stripes in a quadratic crystal create an effective gauge field, and numerical simulations report stable chiral solitons whose fundamental and second-harmonic parts carry opposite energy currents.