由高维陈数支配的量子化孤子泵浦 (IMAGE)

Science China Press

由高维陈数支配的量子化孤子泵浦

Caption

含时调制二维晶格中量子化孤子泵浦的概念示意图。孤子在一个驱动周期内连续运动，其轨迹通过若干选定时刻的“快照”进行展示。每个周期累积的二维净位移由不同阶的拓扑不变量所决定，其中包括第一陈数和第二陈数。

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©《中国科学》杂志社

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