本期内容：
Quantum computers that can solve problems much quicker than machines today are being developed in laboratories around the world. But scientists have already taken the next step, and are thinking about a light-based quantum internet that will have to be just as fast. Quantum communications is an attractive field of research because the technology will enable us to send messages that are much more secure.

Quantum: 量子
Laboratory：实验室
Light-based：基于激光的

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