16 October 2017
One is rapid and strong, and the other is slow and weak, like the heartbeats of a youth and an old man passing through a distance of thousands of light years, and then heard by the most sensitive "ear" on Earth. The "ear" is the Five-hundred-meter Aperture Spherical Telescope (FAST), the world's largest radio telescope, with a dish as large as 30 football fields. It is located in a valley deep in southwest China's mountainous Guizhou Province.
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17 October 2017
"The satellite marks a transition in China's role -- from a follower in classic information technology (IT) development to one of the leaders guiding future IT achievements," said Pan Jianwei, lead scientist of QUESS and an academician of the Chinese Academy of Sciences (CAS). "Satellite-based quantum key distribution can be linked to metropolitan quantum networks where fibers are sufficient and convenient to connect numerous users within a city over 100 km. We can thus envision a space-ground integrated quantum network, enabling quantum cryptography- most likely the first commercial application of quantum information- useful at a global scale," Pan said.
The establishment of a reliable and efficient space-to-ground link for faithful quantum state transmission paves the way to global-scale quantum networks, he added.
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17 October 2017
Chinese scientists on 16 October announced the observation of the "optical counterpart" of gravitational waves coming from the merger of two binary neutron stars using the Chinese survey telescope AST3-2 in Antarctica. The gravitational waves were first discovered by the U.S.-based Laser Interferometer Gravitational-Wave Observatory (LIGO) detectors on 17 August. The Chinese telescope independently observed optical signals resulting from the merger the next day, according to the Chinese Center for Antarctic Astronomy. It was the first time humans have detected gravitational waves and the corresponding electromagnetic phenomena resulting from a binary neutron star merger.
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17 October 2017
Chinese researchers have played a significant role in opening a new era of "Multimessenger astronomy," marked by the first detection of both electromagnetic radiation and gravitational waves and light in the same cosmic collision.
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