论文标题
自由电子结合电子相互作用的量子纠缠和调制增强
Quantum entanglement and modulation enhancement of free-electron-bound-electron interaction
论文作者
论文摘要
自由电子波函数的调制和工程为电子互动带来了新的成分。我们研究了由两级系统通过机械量子完全量子传递的自由电子传递的动力学，并强调了从自由电子波函数的调制中增强相互作用的动力学。在自由电子波函数的调制下，我们表明，对于两级系统的连贯初始状态，电子能量损耗/增益谱大大增强，这可以充当原子相干性的探测。我们进一步发现，远距离分离的两级原子可以通过与相同的自由电子相互作用来纠缠。对于与原子相互作用的调制电子的稀释光束，我们的理论显示了由于调制谐振引起的增强相互作用。
The modulation and engineering of the free-electron wave function bring new ingredients to the electron-matter interaction. We study the dynamics of a free-electron passing by a two-level system fully quantum mechanically and emphasize the enhancement of interaction from the modulation of the free-electron wave function. In presence of modulation of the free-electron wave function, we show that the electron energy loss/gain spectrum is greatly enhanced for a coherent initial state of the two-level system, which can function as a probe of the atomic coherence. We further find that distantly separated two-level atoms can be entangled through interacting with the same free electron. For a dilute beam of modulated electrons interacting with the atom, our theory shows the enhanced interaction due to resonant modulation.
