Jingyun Fan, Alan Migdall and Lijun Wang
The most important question in cryptography is how to ensure the security of a message between its sender and receiver. A quantum approach is desirable because detecting and duplicating a photon’s quantum state—that is, sending a message and keeping a copy— is prohibited by the laws of quantum mechanics. A new light source brings quantum cryptography closer to reality.
Access to the full text of this article is restricted. In order to view this article please log in.