An entangled polarization state of ten photons sets a new record for multiphoton entanglement

Quantum computing requires multiple qubits entangled together. So far, only a handful of qubits have been coupled together successfully. A new experiment raises the bar with the entangling of ten photons, two more than the previous photon record. While still a ways off from what’s needed to make quantum computers competitive with classical ones, the entanglement of this many photons might be sufficient for certain quantum error correction codes and teleportation experiments.