论文标题
两国系统的能量
Energies of Two-State Systems
论文作者
论文摘要
量子状态的能量由相位进化指数的参数给出。因此，对两态系统（TSS）的能量的分析可以围绕Schrodinger图片中状态概率幅度的相位强调描述。在这里，通过半传统研究TSSS的能量，我们建议一种远程浏览形式，其中概率振幅的时间依赖性仅由相位进化因子表示。通过这种新的能量研究方法，我们首先重新审视非驱动的TSS，写下以固定状态设置系统（通常）的条件，并确定相关的（单个）确定能量。然后，更重要的是，我们重新访问了驱动的-TSS，确定两个固定状态，并证明存在与每个固定状态相关的两个准能量。由于我们的相位保存框架，我们显示了强驱动的旋转一半TSS的“呼吸刺激”类型的进动模。此外，我们通过一组两个耦合探针计算机模拟来体现我们的发现。对于特定示例，我们在典型的操作条件下计算并列出了几种混凝土TSS的能量。
Energies of quantum states are given by the arguments of phase-evolution exponentials. It follows then that an analysis of the energies of a two-state system (TSS) can revolve around phase-emphasized description of states' probability amplitudes in the Schrodinger picture. Here, studying energies of TSSs semi-classically, we suggest an energy-revealing format in which the time-dependence of the probability amplitudes is expressed by phase-evolution factors only. With this fresh energy-studying approach, we first revisit non-driven TSSs, write the conditions for setting a system (in general) in a stationary state, and identify the associated (single) definite energy. Then, more importantly, we revisit driven-TSSs, identify the two stationary states and prove the existence of two quasi-energies associated with each stationary state. Resulting from our phase-keeping framework, we display a "breathing-spiral" type precession-mode of a strongly-driven spin one-half TSS. Further, we exemplify our findings through a set of two coupling-probe computer simulations. For specific examples, we compute and list the energies of several concrete TSSs under typical operating conditions.
