Two Measurement Settings can Suffice to Verify Multipartite Entanglement
Two Measurement Settings can Suffice to Verify Multipartite Entanglement
We present entanglement witnesses for detecting genuine multi‐qubit entanglement. Our constructions are robust against noise and require only two local measurement settings, independent of the number of qubits. Thus they allow us to verify entanglement of many qubits in experiments while requiring only a small effort. In contrast, usual methods …