Next-gen quantum teleportation in just 2 photons

Quantum teleportation just got simpler and more reliable. The enhanced technique could lead to secure quantum networks for communication and computing.

Despite its sci-fi connotation, quantum teleportation doesn’t magically move objects but instead transmits fragile information. Unlike classical data — the 1s and 0s used in electronics — quantum information can exist in multiple states at once, as long as the particles encoding the data are not disturbed or measured. Teleportation allows for the transfer of a particle’s quantum state from one particle to another.

The standard procedure for quantum teleportation, proposed in 1993, requires three particles in all: the particle to be teleported, dubbed C, plus a pair of particles, A and B, that are entangled, meaning that they are linked in a way that measuring a property of one instantly reveals the value of that property for the other. The sender measures the desired property of particles A and C,