研究目的
Investigating the design and experimental demonstration of nanoscale phononic waveguides based on hexagonal boron nitride (h-BN) for high frequency (HF) to very high frequency (VHF) bands, aiming to open new opportunities in radio-frequency (RF) signal processing and on-chip quantum information technologies.
研究成果
The study successfully demonstrates the first experimental realization of quasi-1D phononic waveguides based on 2D h-BN crystals, showcasing well-defined stop bands, bandgaps, and mode crossing features. The novel heterogeneous integration approach developed offers a pathway to bypass fabrication challenges and enables the creation of 2D phononic crystal structures. This advancement holds promise for active device functionalities in RF bands and coherent signal transduction across different physical domains.
研究不足
The study is limited by the challenges in nanofabrication of 2D materials and the need for preserving the quantum signatures of emitters in h-BN. Additionally, the tunability of phononic waveguides is explored numerically, requiring experimental validation for practical applications.
