One Photon, One Exchange, Two-Way Communication

At least experimentally, a group of researchers have shown the ability to perform two-way communication using a single photon, distributed between two parties, once. The study has also developed a basis for additional communication protocols including secure communications. The original report and related discussion give pause to consider the possibilities of quantum superposition beyond what we have seen to date.

The original report is found here…

Related discussion found at LIVESCIENCE…