Time-Domain Two-Magnon Interference Enabled by a Tunable Beamsplitter

• URL: http://arxiv.org/abs/2602.13572v1
• Date: Sat, 14 Feb 2026 03:15:03 GMT
• Title: Time-Domain Two-Magnon Interference Enabled by a Tunable Beamsplitter
• Authors: Cody Trevillian, Steven Louis, Vasyl Tyberkevych,
• Abstract summary: Two-magnon interference is supported by a tunable magnonic beamsplitter operation formed in a hybrid cavity magnonic system.<n>These findings suggest that two-magnon interference in hybrid cavity magnonic systems may enable novel quantum metrological devices to study fundamental magnon dynamics.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: This letter presents a model system for controllable two-magnon interference in the time domain. This two-magnon interference, i.e., a magnonic analog to the photonic Hong-Ou-Mandel effect, is supported by a tunable magnonic beamsplitter operation formed in a hybrid cavity magnonic system comprising a pair of mutually coupled magnon modes. By applying a time-dependent magnetic field, magnons can be excited independently in each mode and subsequently brought into interaction, shifting from independent to collective oscillations, to realize a controllable magnonic beamsplitter. When the beamsplitter operation is applied to an initially unentangled two-magnon state, a maximally entangled magnonic $N00N$ state with tunable phase sensitivity is produced. These findings suggest that two-magnon interference in hybrid cavity magnonic systems may enable novel quantum metrological devices to study fundamental magnon dynamics and contribute to developing hybrid magnonic quantum computing architectures.

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