Faithful Multi-Hop Qubit Transmission Based on GHZ States

Abstract

Quantum teleportation faithfully transfers quantum bits (qubits) between distant nodes, which enables global quantum communication network. In this paper, a scheme for faithful multi-hop qubit transmission is proposed employing parallel quantum measurements. In terms of communication delay, the proposed scheme transports a qubit in time almost the same as the one-hop quantum teleportation does regardless of the number of hops between the source and destination.