By changing the structure of such a crystal slightly, using an electric charge, the colour of the light reflected by that crystal will change too.
依靠轻微得改变晶体的结构，利用电流的改变，当晶体改变时，光的颜色也会相应改变。
An art we have already mastered, on the other hand, is applying an electric field to manipulate charge on a chip - but until now we had no way of using this to control spin.
在另一方面，我们已掌握的在芯片内利用电场操控电荷的技术然而目前该技术还无法被用来操控自旋。
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