论文标题
片上超紧凑型六边形氮化硼硝酸硼拓扑环谐波在可见区域
On-chip ultra-compact hexagonal boron nitride topological ring-resonator in visible region
论文作者
论文摘要
手性的超紧凑型拓扑环谐振器是量子光学元件的重要设备。但是，手性谐振器的示范有限，尤其是在可见区域。我们提出了一种基于六角硼（HBN）谷光子晶体（VPC）的拓扑光子环谐振器。 VPC中的旋转瓦利锁定效果允许在可见区域（600 nm-650 nm）中实现边缘状态的强大单向传输。结果，可以在可见区域的自由光谱范围为15.2 nm的高质量因子（679.3），可以在具有紧凑尺寸的HBN全通滤波器中实现。此外，我们研究了具有不同形状和组合的HBN环形谐振器的传输特性，从而确认了基于该原理设计拓扑环谐振器的灵活性。该设计可以轻松地与用于广泛应用的量子光子芯片集成。
Ultra-compact topological ring-resonators with chirality are important devices for quantum optics. However, there are limited demonstrations of chiral resonators, especially in the visible region. We proposed a topological photonic ring-resonator based on hexagonal boron nitride (hBN) valley photonic crystal (VPC). The spin-valley locking effect in VPC allows achieving robust unidirectional transmission of edge states in the visible region (600 nm-650 nm). As a result, a high quality factor (679.3) with a free spectral range of 15.2 nm in the visible region can be achieved in a hBN all-pass filter with a compact size. In addition, we investigated the transmission properties of hBN ring-resonators with different shapes and combinations, confirming the flexibility of designing topological ring-resonators based on this principle. This design can be readily integrated with quantum photonic chips for broad applications.
