Figure 1
From: Activation of Einstein–Podolsky–Rosen steering sharing with unsharp nonlocal measurements
The scenario of steering sharing using sequential unsharp nonlocal measurements. A three-qubit state is initially shared between the spatially separated \(A_1\), \(B_1\) and Charlie. \(A_1\) and \(B_1\) perform nonlocal measurement on their qubits and transmit the post-measurement qubits to \(A_2\) and \(B_2\). This process is repeated until the last pair of \(A_m\) and \(B_m\) measure the qubits. Meanwhile, Charlie performs local measurements on his single qubit. The goal is for multiple pairs \(\{A_i, B_i\}\), i.e., \(\{A_1, B_1\}\), \(\{A_2, B_2\},..., \{A_m, B_m\}\) to remotely steer the quantum state of Charlie simultaneously and independently.
