论文标题
在二维磁量子行走中操纵非循环性
Manipulating non-reciprocity in a two-dimensional magnetic quantum walk
论文作者
论文摘要
非重生是基本物理和量子设备设计中的重要主题，因为已经致力于其工程和操纵。在这里，我们在实验中证明了在二维量子步行中的非转向转运，在该光子的光子中，通过耗散和合成磁通量，方向传播高度可调。此处的非重粒局部动力学是非铁皮皮肤效应的表现，其方向通过光子损失参数连续调节。相比之下，合成通量源自工程的几何阶段，该阶段通过磁性限制与非铁皮皮肤效应竞争。我们进一步证明了非记录和合成通量如何影响沿工程边界的Floquet拓扑边缘模式的动力学。我们的结果举例说明了实现可调的非转运运输的有趣策略，突出了非热性和量规场在高维量子系统中的相互作用。
Non-reciprocity is an important topic in fundamental physics and quantum-device design, as much effort has been devoted to its engineering and manipulation. Here we experimentally demonstrate non-reciprocal transport in a two-dimensional quantum walk of photons, where the directional propagation is highly tunable through dissipation and synthetic magnetic flux. The non-reciprocal dynamics hereof is a manifestation of the non-Hermitian skin effect, with its direction continuously adjustable through the photon-loss parameters. By contrast, the synthetic flux originates from an engineered geometric phase, which competes with the non-Hermitian skin effect through magnetic confinement. We further demonstrate how the non-reciprocity and synthetic flux impact the dynamics of the Floquet topological edge modes along an engineered boundary. Our results exemplify an intriguing strategy for achieving tunable non-reciprocal transport, highlighting the interplay of non-Hermiticity and gauge fields in quantum systems of higher dimensions.
