Quantum information diode based on a magnonic crystal

Abstract Exploiting the effect of nonreciprocal magnons in a system with no inversion symmetry, we propose concept quantum information diode, i.e., device rectifying amount transmitted opposite directions. We control asymmetric left and right currents through an applied external electric field quantify it out-of-time-ordered correlation (OTOC). To enhance efficiency utilize magnonic crystal. excite different frequencies let them propagate Nonreciprocal propagating directions have dispersion relations. Magnons one direction match resonant conditions scatter on gate magnons. Therefore, magnon flux is damped crystal leading to transport diode. A diode can be fabricated from yttrium iron garnet (YIG) film. This experimentally feasible implies certain conditions: low temperature small deviation equilibrium exclude effects phonons interactions. show that rectification flaw controlled efficiently by magnetoelectric effects.