Spin-Wave Quantum Device Testing Platform

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The Spin-Wave Quantum Computing Platform focuses on emerging quantum and quasi-quantum computing paradigms that use spin waves (magnons) as information carriers. It is dedicated to the excitation, transport, interference, and control of spin waves, as well as to the development of spin-wave quantum devices and prototype systems. To date, the team has independently established multiple internationally advanced spin-wave experimental platforms, with key testing capabilities reaching a world-class level. The platform comprises one low-temperature high-frequency magnetic-field probe station, two room-temperature high-frequency magnetic-field probe stations, and one high-precision Brillouin light scattering optical measurement system. It covers a wide temperature range from 10 K to 400 K and a full frequency band from DC to 67 GHz, enabling systematic experimental studies of spin-wave transport, propagation, nonreciprocal effects, and dynamic manipulation. Building on these hardware capabilities, the team has also independently developed a comprehensive software system for spin-wave platform testing, enabling automated measurement workflows and high-throughput multi-parameter characterization. This provides solid support for the validation of spin-wave quantum devices and the development of scalable prototype systems.

Representative recent achievements include: the first experimental realization of coherent interference and chirality control of antiferromagnetic magnon modes (Nat. Phys. 21, 740–745 (2025)); long-distance propagation of chiral magnon edge states realized in artificial antiferromagnetic thin films (Nat. Mater. 24, 69–75 (2025)); the first observation of gapless magnons in easy-axis antiferromagnetic materials (Phys. Rev. Lett. 134, 056701 (2025)); and nonlinear magnon switching with neuromorphic computing behavior (Nat. Commun. 16, 5794 (2025)).