討論組：公開學術報告
標題：Experimental Investigation on Quantum Information via Free-space Optical Channel
演講人：
曹原 University
時間： 2011-12-15 16:00-2011-12-15 17:00
地點：FIT 1-222
內容：
Generally speaking, there are mainly two types of quantum channels, ?ber links and free-space links. Considering absorptive losses in the channel and dark counts in the detection, the distances of current ?ber-based QKD experiments are limited to hundreds of kilometers. For free-space links, considering the photon loss and decoherence is almost negligible in the outer space, satellite-to-ground QKD is acknowledged as one of the most promising way to run large-scale quantum communication schemes. On the other hand, we can also implement experiments via free-space optical links to research some fundamental problems in quantum physics such as testing quantum non-locality, showing quantum teleportation.
人物介紹：