Liu Yulong, Sun Huanying, Liu Qichun, Wu Haihua, Sillanpää Mika A, Li Tiefu
Beijing Academy of Quantum Information Sciences, Beijing, China.
Department of Applied Physics, Aalto University, Aalto, Finland.
Nat Commun. 2025 Jan 31;16(1):1207. doi: 10.1038/s41467-025-56497-3.
Cubic silicon-carbide crystals (3C-SiC), known for their high thermal conductivity and in-plane stress, hold significant promise for the development of high-quality (Q) mechanical oscillators. We reveal degeneracy-breaking phenomena in 3C-phase crystalline silicon-carbide membrane and present high-Q mechanical modes in pairs or clusters. The 3C-SiC material demonstrates excellent microwave compatibility with superconducting circuits. Thus, we can establish a coherent electromechanical interface, enabling precise control over 21 high-Q mechanical modes from a single 3C-SiC square membrane. Benefiting from extremely high mechanical frequency stability, this interface enables tunable light slowing with group delays extending up to an impressive duration of an hour. Coherent energy transfer between distinct mechanical modes are also presented. In this work, the studied 3C-SiC membrane crystal with their significant properties of multiple acoustic modes and high-quality factors, provide unique opportunities for the encoding, storage, and transmission of quantum information via bosonic phonon channels.
立方碳化硅晶体（3C-SiC）以其高导热性和面内应力而闻名，在高质量（Q）机械振荡器的发展方面具有巨大潜力。我们揭示了3C相晶体碳化硅膜中的简并破缺现象，并呈现出成对或成簇的高Q机械模式。3C-SiC材料与超导电路表现出优异的微波兼容性。因此，我们可以建立一个相干机电接口，能够从单个3C-SiC方形膜精确控制21种高Q机械模式。受益于极高的机械频率稳定性，该接口能够实现可调谐光慢化，群延迟延长至令人印象深刻的一小时时长。还展示了不同机械模式之间的相干能量转移。在这项工作中，所研究的具有多种声学模式和高品质因数等显著特性的3C-SiC膜晶体，为通过玻色子声子通道进行量子信息的编码、存储和传输提供了独特机会。
