论文标题
在电路中观察到具有平衡增益和损失的电路中的两个PT过渡
Observation of two PT transitions in an electric circuit with balanced gain and loss
论文作者
论文摘要
我们研究了一个包含两个LC振荡器的二聚体中的PT-对称性断裂转变，一个振荡器损失，第二个具有增益。该四模型模型的电能在两个LC电路之间以及每个LC电路内的电容和电感能量之间振荡。它的动力学由非热的PT -Ampymmememitric Hamiltonian描述，三个不同的相位被两个特殊点隔开。我们系统地测量了这三个区域的能量动力学的特征，这是增益强度的函数。除了观察到跨两个LC电路的振荡良好的PT跃迁，还以更高的增益强度，还观察到每个LC回路内的过渡。 PT-对称电子设备具有非凡的调整能力，非常适合非官方系统的经典模拟
We investigate PT -symmetry breaking transitions in a dimer comprising two LC oscillators, one with loss and the second with gain. The electric energy of this four-mode model oscillates between the two LC circuits, and between capacitive and inductive energy within each LC circuit. Its dynamics are described by a non-Hermitian, PT -symmetric Hamiltonian with three different phases separated by two exceptional points. We systematically measure the eigenfrequencies of energy dynamics across the three regions as a function of gain-loss strength. In addition to observe the well-studied PT transition for oscillations across the two LC circuits, at higher gain-loss strength, transition within each LC circuit is also observed. With their extraordinary tuning ability, PT -symmetric electronics are ideally suited for classical simulations of non-Hermitian systems
