Fig. 1
From: Secure quantum remote state preparation of squeezed microwave states

Principle of remote state preparation. a General RSP scheme: Alice remotely prepares a desired state at Bob’s side using a quantum resource and classical communication (feedforward). b Experimentally implemented RSP scheme: a two-mode squeezed state (left) serves as quantum resource and the feedforward to Bob (right) is implemented using JPA 3 and a directional coupler