论文标题
轨道职业的连贯控制驾驶绝缘体到金属的莫特过渡，v $ _2 $ o $ _3 $
Coherent control of the orbital occupation driving the insulator-to-metal Mott transition in V$_2$O$_3$
论文作者
论文摘要
比电子连贯性损失更快地管理时间标志的光 - 物质相互作用是实现固相变的最终产品的完全量子控制的关键。在这项工作中，我们演示了原型莫特绝缘子中光诱导的绝缘体到金属过渡的连贯的电子控制，v $ _2 $ o $ $ _3 $。选择性激发带有两种相锁的光脉冲的特定界界过渡以操纵相关条带的轨道占领，其方式取决于光诱导的状态叠加的相干演化。光学BLOCH方程的实验结果与数值解之间的比较提供了5 fs阶的电子相干时间。与温度相关的实验表明，在绝缘体到金属过渡临界温度附近，电子相干时间得到了增强，从而突出了波动在确定电子相干性方面的作用。这些结果开辟了新的途径，以选择性切换量子材料的功能并相干控制固相电子变换。
Managing light-matter interactions on timescales faster than the loss of electronic coherence is key for achieving full quantum control of the final products in solid-solid transformations. In this work, we demonstrate coherent electronic control of the photoinduced insulator-to-metal transition in the prototypical Mott insulator V$_2$O$_3$. Selective excitation of a specific interband transition with two phase-locked light pulses manipulates the orbital occupation of the correlated bands in a way that depends on the coherent evolution of the photoinduced superposition of states. A comparison between experimental results and numerical solutions of the optical Bloch equations provides an electronic coherence time on the order of 5 fs. Temperature-dependent experiments suggest that the electronic coherence time is enhanced in the vicinity of the insulator-to-metal transition critical temperature, thus highlighting the role of fluctuations in determining the electronic coherence. These results open new routes to selectively switch the functionalities of quantum materials and coherently control solid-solid electronic transformations.
