Remote state preparation with classical versus quantum resources - Nathan Killoran

Remote state preparation (RSP) is the act of preparing a quantum state at a remote location without actually transmitting the state itself. Using at most two classical bits and a single shared maximally entangled state, one can in theory remotely prepare any qubit state with certainty and with perfect fidelity. However, in any experimental implementation the average fidelity between the target and output states cannot be perfect. In order for an RSP experiment to demonstrate genuine quantum advantages, it must surpass the optimal threshold of a comparable classical protocol. In this talk, I will outline how to find the maximum fidelity achievable by RSP protocols lacking shared entanglement. From this, I will propose several experimental benchmarks that can be used to verify genuine quantum behaviour in any RSP protocol. Finally, I will report on a recent RSP experiment and compare our experimental results with the proposed benchmarks.