Deterministic and Probabilistic Short-Distance Teleportation of an Unknown Three-Qubit State

Abstract

Teleportation across short distances has become relevant in view of some recent developments in quantum technology. The advantage here is that certain auxiliary qubits can be accessed and utilized by both the sender and the receiver. Such an act reduces the requirement of the number of qubits in the entangled quantum channel which would have been otherwise necessary. In this paper we present a short-distance teleportation protocol by which an unknown three-qubit state can be transferred with the help of auxiliary qubits and a maximally entangled Bell State. In the second part of the paper we introduce a probabilistic short-distance protocol for the same unknown three-qubit state by using a non-maximally entangled Bell-state. The success probability of the protocol is calculated and its relation with the first protocol is discussed. We presented a circuit diagram for the first protocol and executed it in the IBM-Quantum platform.