论文标题
从高频双重来源设计绝热的时间进化
Designing adiabatic time-evolution from high frequency bichromatic sources
论文作者
论文摘要
我们使用非扰动分析研究了由两级系统驱动的两级系统的量子动力学。在两个大频率的情况下，我们特别强调了Magnus膨胀可能会失败的，并且在较大且较小的频率的情况下，共振可以占主导地位。在第一种情况下，我们表明可以将两个大频率合并以产生有效的绝热演化。在第二种情况下，我们表明高频项（自然而然地作为对第一种情况获得的绝热进化的校正）可用于在整个Bloch球体上产生高度可调的绝热进化，并由多光子共振控制。
We investigate the quantum dynamics of a two-level system driven by a bichromatic field, using a non-perturbative analysis. We make special emphasis in the case of two large frequencies, where the Magnus expansion can fail, and in the case of a large and a small frequency, where resonances can dominate. In the first case, we show that two large frequencies can be combined to produce an effective adiabatic evolution. In the second case, we show that high frequency terms (which naturally arise as corrections to the adiabatic evolution obtained in the first case) can be used to produce a highly tunable adiabatic evolution over the whole Bloch sphere, controlled by multi-photon resonances.
