Long-sought method for identifying W-state entanglement demonstrated

ScienceDaily reports that scientists experimentally demonstrated a method for identifying W states, a form of multi-photon quantum entanglement, after a 25-year challenge. It says the technique could make complex entangled systems easier to measure, opening possibilities for quantum teleportation, communication and computing. Aieon.ee identifies the researchers as being at Kyoto University and Hiroshima University.