5 papers · 1 filter
Real-axis least-squares bath discretization for real-time transport in quantum-dot Josephson junctions
Ruixin Zhou, Bing Dong, Yiyan Wang
Efficient real-time methods are essential for resolving transient coherence and nonlinear transport in driven superconducting nanostructures. Such simulations remain challenging be…
Exceptional Points in a Parallel Double-Quantum-Dot Josephson Junction Coupled to a Ferromagnetic Reservoir
Yiyan Wang, Ruixin Zhou, Bing Dong
We investigate exceptional points (EPs) in a parallel double-quantum-dot Josephson junction coupled to a dissipative reservoir. By integrating out the leads, we obtain a non-Hermit…
Magnetic flux controlled current phase relationship in double Quantum Dot Josephson junction
Yiyan Wang, Cong Li, Bing Dong
In this work, we study a Josephson junction with parallel-connected quantum dots (QDs) threaded by a magnetic flux in the central region. We discretize the superconducting (SC) ele…
Quantum phase transition in a double quantum dot Josephson junction driven by electron-electron interactions
Cong Li, Yiyan Wang, Bing Dong
In this work, we employ a surrogate BCS model with discrete energy levels to investigate a hybrid system comprising two quantum dots (QD1 and QD2), where QD1 is tunnel-coupled to t…
Quantum Resistor-Capacitor Circuit with two Majorana Bound States
Cong Li, Bing Dong
In this paper, we derive the equations of motion for a system composed of a spinless quantum dot coupled to two normal leads and two Majorana bound states (MBSs), utilizing the aux…