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Interferometer Device Sees Text from a Mile Away
A high-resolution imaging system captures distant objects by shining laser light on them and detecting the reflected light.
The remote-imaging system (left) shoots eight infrared laser beams (red line added to show the path) at a target (right) in a building 1.36 km away. “The new work represents a significant technical advancement in imaging distant objects that do not emit their own light,” says Shaurya Aarav, a quantum optics researcher from the Sorbonne University in France. Lu-Chuan Liu, Cheng Wu, Wei Li, Yu-Ao Chen, Xiao-Peng Shao, Frank Wilczek, Feihu Xu, Qiang Zhang, and Jian-Wei Pan
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