Quantum entanglement

Physics

Quantum channel

Qubit

Squashed entanglement

Greenberger–Horne–Zeilinger state

Multipartite

Cluster state

W state

Quantum mechanics

Quantum teleportation

Multipartite entanglement

Quantum

Physical review. A/Physical review, A

An 18-qubit GHZ state with multipartite entanglement is prepared and measured on a 20-qubit device. The detection technique used, which is based on measuring multiple quantum coherences, is robust to noise and only requires measuring the population in the ground state.

Verifying multipartite entangled Greenberger-Horne-Zeilinger states via multiple quantum coherences