论文标题
使用开关脉冲序列在量子点中快速Biexciton状态制备
Rapid biexciton state preparation in a quantum dot using on-off pulse-sequences
论文作者
论文摘要
我们考虑量子点中脉冲biexciton制备的问题，并表明具有简单的开放式调制的脉冲序列可以比常用的常数和双曲线固定脉冲更快地实现目标状态的完整制备。组成序列的脉冲的持续时间是从先验方程的溶液中获得的。此外，使用数值最佳控制，我们证明，对于最大脉冲幅度的广泛值，提出的脉冲序列在数值获得的最小时间中为所考虑的特定系统准备了biexciton状态。我们最终通过数值模拟显示，即使存在耗散和脱落，也可以在短时间内产生高水平的biexciton状态保真度。
We consider the problem of pulsed biexciton preparation in a quantum dot and show that a pulse-sequence with a simple on-off-on modulation can achieve complete preparation of the target state faster than the commonly used constant and hyperbolic secant pulses. The durations of the pulses composing the sequence are obtained from the solution of a transcendental equation. Furthermore, using numerical optimal control, we demonstrate that for a wide range of values of the maximum pulse amplitude, the proposed pulse-sequence prepares the biexciton state in the numerically obtained minimum time, for the specific system under consideration. We finally show with numerical simulations that, even in the presence of dissipation and dephasing, high levels of biexciton state fidelity can be generated in short times.
