量子波对瞬时势阶跃开关的瞬态响应

Transients with time-independent currents

It is shown that when the initial particles probability density is discontinuous the emerging currents appear instantaneously, and although the density beyond the discontinuity is initially negligible the currents there have a finite value. It is shown that this non-equilibrium effect can be measured in real experiments (such as cooled Rubidium atoms), where the discontinuity is replaced with finite width (hundreds of nanometers) gradient.

Transient particle energies in shortcuts to adiabatic expansions of harmonic traps

The expansion of a harmonic potential that holds a quantum particle may be realized without any final particle excitation but much faster than adiabatically via "shortcuts to adiabaticity" (STA). While ideally the process time can be reduced to zero, practical limitations and constraints impose minimal finite times for the externally controlled time-dependent frequency protocols. We examine the role of different time-averaged energies (total, kinetic, potential, non-adiabatic) and of the instantaneous power in characterizing or selecting different protocols.Specifically, we prove a virial theo…

从半金属中量子几何的超快电流切换

Ultrafast Current Switching from Quantum Geometry in Semimetals

研究通过量子几何半金属实现超快电流切换，揭示其在现代电子中的应用潜力，提出基于Hilbert-Schmidt距离的机制，并通过第一性原理计算验证材料可行性。

基于矩阵低维量子比特铸造的量子电磁暂态网络仿真程序

Matrix Low-dimensional Qubit Casting Based Quantum Electromagnetic Transient Network Simulation Program

针对电磁暂态仿真的维数灾难与VQLS预处理数据膨胀，本文提出MLQC和仅实数量子电路约简方法，构建QEMTP并在高频开关网络中验证。