July 1, the international authoritative academic periodical Nature issued great breakthrough of Prof. Pan Jianwei from Heifei National Laboratory for Physical Sciences at Microscale: Experimental demonstration of five-photon entanglement and open-destination teleportation. This is another issue of their research since the periodical published Experimental Entanglement Purification of Arbitrary Unknown States on May 22. The event noted again that our country has successfully surpassed U.S., France and Austria in the research of multi-photon entanglement and reached the advanced level of the world.

Nature comments, "Although realization of five-photon entanglement and open-destination teleportation is very difficult, Prof. Pan Jianwei and his colleagues from USTC have done this job. Their experimental methods will have significant application in quantum computation and network quantum communication."

Preparation and manipulation of multi-photon entanglement is a hot subject in the field of quantum physics and quantum communication. Entanglement of three or four particles has been achieved experimentally, which is used to prove unlocality of quantum mechanics, named by Einstein as "ghostly interaction between distant spots". However, when people are used to this strange phenomenon, how to apply quantum entanglement in quantum computation and quantum communication remains a challenge in real world. To master the key technology of quantum error correction is a must to ensure reliability of quantum computation. Simply entanglement of three or four particles is not enough for universal quantum error correction and five-photon entanglement is required together with correlation control, which is very challenging technically. Thus, preparation and manipulation of five-photon entanglement remains an acknowledged hard task.