Picking one photon out of the flow

Science Daily   May 3, 2018
An international team of researchers (Denmark, Germany, USA – NIST) has implemented photonic memory. The general idea was to first store an optical field, and then send another one through the medium. Photons in the second beam take notice of the stored photons and interact with them in such a way that exactly one photon is tagged and later discarded on retrieval. Being robbed of a single photon, the original light beam is left in a peculiar quantum state that has numerous scientific and technological applications. This method paves the way towards future quantum communication and computation using the subtle aspects of quantum mechanics… read more. TECHNICAL ARTICLE