Floquet modulation of magnon frequency in a cavity-magnon system produces a discontinuous parity-symmetry-breaking transition followed by a continuous restoration as drive strength increases.
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A cavity magnonic system with YIG sphere uses the sign of the magnon Kerr coefficient to produce nonreciprocal SQPT with different critical drive strengths for K>0 versus K<0.
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Superradiant phase transition in cavity magnonics via Floquet engineering
Floquet modulation of magnon frequency in a cavity-magnon system produces a discontinuous parity-symmetry-breaking transition followed by a continuous restoration as drive strength increases.
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Nonreciprocal superradiant quantum phase transition induced by the magnon Kerr effect
A cavity magnonic system with YIG sphere uses the sign of the magnon Kerr coefficient to produce nonreciprocal SQPT with different critical drive strengths for K>0 versus K<0.