Symmetry-enforced phase state communication in chiral magnonics

Abstract

Wireless and injection-locked communication systems encode information via carrier-wave modulation, treating oscillator phase as a tunable variable. We develop a communication model for a near-field transceiver that instead exploits symmetry-enforced phase synchronization between collective magnetic eigenmodes. A chiral helimagnetic transmitter and an off-resonant ferromagnetic receiver are coupled through dipolar interactions. A vectorial signal model and channel description formalize the competing helimagnon and parasitic drive fields. Information is encoded in the excited collective mode and decoded, within a phase-stable operating region, via discrete receiver phase states. A phasor simulation grounded in experimentally measured parameters maps the achievable symbol rate landscape, quantifying synchronization robustness. Collective mode symmetry is thereby identified as a novel information-bearing degree of freedom.