Chiral current in Floquet cavity-magnonics
- URL: http://arxiv.org/abs/2206.09540v2
- Date: Tue, 11 Oct 2022 03:09:57 GMT
- Title: Chiral current in Floquet cavity-magnonics
- Authors: Shi-fan Qi and Jun Jing
- Abstract summary: Floquet engineering can induce complex collective behaviour and interesting synthetic gauge-field in quantum systems.
We realize a chiral state-transfer in a cavity-magnonic system using a Floquet drive on frequencies of the magnon modes.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Floquet engineering can induce complex collective behaviour and interesting
synthetic gauge-field in quantum systems through temporal modulation of system
parameters by periodic drives. Using a Floquet drive on frequencies of the
magnon modes, we realize a chiral state-transfer in a cavity-magnonic system.
The time-reversal symmetry is broken in such a promising platform for coherent
information processing. In particular, the photon mode is adiabatically
eliminated in the large-detuning regime and the magnon modes under conditional
longitudinal drives can be indirectly coupled to each other with a
phase-modulated interaction. The effective Hamiltonian is then used to generate
chiral currents in a circular loop, whose dynamics is evaluated to measure the
symmetry of the system Hamiltonian. Beyond the dynamics limited in the manifold
with a fixed number of excitations, our protocol applies to the
continuous-variable systems with arbitrary states. Also it is found to be
robust against the systematic errors in the photon-magnon coupling strength and
Kerr nonlinearity.
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