Department of Physics, Pusan National University, Busan, 46241, Republic of Korea.
Quantum Matter Core-Facility, Department of Physics, Pusan National University, Busan, 46241, Republic of Korea.
Nat Commun. 2023 Jan 26;14(1):415. doi: 10.1038/s41467-023-36012-2.
The resemblance between electrons and optical waves has strongly driven the advancement of mesoscopic physics, evidenced by the widespread use of terms such as fermion or electron optics. However, electron waves have yet to be understood in open cavity structures which have provided contemporary optics with rich insight towards non-Hermitian systems and complex interactions between resonance modes. Here, we report the realization of an open cavity resonator in a two-dimensional electronic system. We studied the resonant electron modes within the cavity and resolved the signatures of longitudinal and transverse quantization, showing that the modes are robust despite the cavity being highly coupled to the open background continuum. The transverse modes were investigated by applying a controlled deformation to the cavity, and their spatial distributions were further analyzed using magnetoconductance measurements and numerical simulation. These results lay the groundwork to exploring matter waves in the context of modern optical frameworks.
电子与光波之间的相似性极大地推动了介观物理学的发展，这一点可以从广泛使用诸如费米子或电子光学等术语得到证明。然而，在为非厄米系统和共振模式之间的复杂相互作用提供了丰富见解的开放式腔结构中，电子波尚未得到理解。在这里，我们报告了在二维电子系统中实现开放式腔谐振器。我们研究了腔内的共振电子模式，并解析了纵向和横向量子化的特征，表明尽管腔与开放式背景连续体高度耦合，但模式仍然很稳定。通过对腔施加受控变形来研究横向模式，并使用磁导率测量和数值模拟进一步分析它们的空间分布。这些结果为在现代光学框架中探索物质波奠定了基础。
