Electrical circuit simulation of non-Hermitian lattice models

Quantum simulation serves as a significant tool for studying and understanding novel phenomena in the quantum world. In recent years, it has be realized that apart from platforms, classical systems like photonic crystals, phononic mechanical oscillators can also employed to simulate models by analogizing Schrödinger equation. Among these systems, electrical circuits have emerged promising platform owing their low cost, technological maturity, ease of scalability, successfully simulating numerous important phenomena. Meanwhile, non-Hermitian physics breaks Hermiticity systems' Hamiltonians traditional mechanics, providing fresh perspective particularly open systems. Non-Hermitian due manifestation unique absent Hermitian become emerging research subjects various fields physics. However, many require specialized configurations pose relatively high technical thresholds on platforms. For instance, nonHermitian skin effect typically requires with non-reciprocal hopping between lattice sites. Therefore, utilizing flexible becomes natural choice. This paper provides short review current experimental progress using circuits. It offers brief introduction relevant knowledge physics, including mathematical concepts phenomena, well theory circuits, mapping models, non-Hermiticity, measurement physical quantities, etc. The aim is provide readers reference better or engagement related works, promoting further development this field.