Quanta Magazine“In the long run, if these techniques are to become practical, they will require a quantum network,” said Mikhail Lukin, a quantum optics specialist at Harvard University. By contrast, the construction of a quantum internet, Bland-Hawthorn said, is “decades from reality.” “It’s very exciting and surprising to see that quantum information techniques can be useful for astronomy,” said Zong-Quan Zhou, who co-authored the recently published paper. The trick is to transport fragile photons between telescopes, so that the signals can be combined, or “interfered,” to create far sharper images. After a while, you transport the hard drives to a single location, where you interfere the signals to create an incredibly high-resolution image. The first-ever picture of a black hole, released in 2019, was made by synchronizing signals that arrived at eight radio telescopes dotted around the world. But whereas the quantum internet is a far-off dream, a new proposal lays out a scheme for doing optical interferometry with quantum storage devices that are under development now.
Article from Quanta Magazine.