Steering spin fluctuations in lattice systems via two-tone Floquet engineering
arxiv(2024)
摘要
We report on the controlled creation and destruction of antiferromagnetic
dimers using two-tone Floquet engineering. We consider a one-dimensional
spin-1/2 lattice with periodically modulated bonds using parametric resonances.
The stroboscopic dynamics generated from distributed bond modulations lead to
pair correlation between spins. Consequently, subharmonic response in local
observables breaks discrete time translational symmetry and leads to the
emergence of Floquet dynamical dimerisation. We present a protocol allowing the
control of local spin-correlated pairs driven by one-period evolution
operators, providing significant insight into new nonequilibrium states of
matter that can be feasibly implemented in current quantum simulator platforms.
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