Improvement on Quantum bidirectional teleportation 2-2 or 2-3 qubit teleportation protocol via 6-qubit entangled state

TL;DR

This paper improves a bidirectional quantum teleportation protocol for 2-2 and 2-3 qubit states by optimizing quantum resources, reducing classical resource use, and enhancing intrinsic efficiency and security.

Contribution

The paper presents an optimized scheme for bidirectional quantum teleportation that outperforms previous methods in resource efficiency and security.

Findings

Enhanced intrinsic efficiency over previous schemes

Reduced classical resource consumption

Improved security features

Abstract

Recently, Ri-Gui Zhou et al. [Int. J. Theor. Phys. 59, 166-172 (2020)] proposed a scheme for bidirectional quantum teleportation of two-two and two-three qubit states by utilizing a six-qubit entangled state as a quantum channel. It is observed that the intrinsic efficiency calculated by Zhou et al. is not correct. In this improved scheme, we show that bidirectional teleportation of two-two and two-three qubit quantum states can be done by using optimized quantum resource and less consumption of classical resource. We also calculate the intrinsic efficiency of our improved scheme which is much better than the Zhou's scheme. Additionally, we also discuss about the security of the protocol.