Work

Hybrid Quantum Surface Acoustic Wave with Skyrmion Qubit for Quantum Information Processing

Year: 2025

Type: article

Abstract: Surface acoustic wave (SAW) devices are key components of classical communication systems and recently studied for quantum information processing. We here propose and study a hybrid quantum system composed of skyrmion qubit and a SAW cavity, which supports multiple long-lived phononic modes. The system allows for strong coupling between single skyrmion qubit and single phonon of different modes. By manipulating the qubit through a static magnetic field and a time-dependent modulation magnetic field, we further study the interaction between skyrmion qubit and individual phononic modes, phonon-phonon interaction, and qubit-qubit interaction, all operating in strong-coupling regime. The controllability of nanoscale skyrmion qubit and the dense phononic modes of single SAW cavity make our system have promising applications in large-scale chips for quantum communication and computing.

Source: Physical Review Letters

DOI: 10.1103/3tz7-pqqq

Authors: Yu-Yuan Chen, Zhihui Peng, Yu-xi Liu

Institutions: Frontier Science Center for Quantum Information of the Ministry of Education of China, Tsinghua University, Hunan Normal University

Language: English

Topic: Mechanical and Optical Resonators

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: National Natural Science Foundation of China

Awards: G3762757707, G8006573244, G8438976083