Communication via entangled coherent quantum network

TL;DR

This paper explores quantum communication using entangled coherent states in a network, analyzing teleportation success probabilities and fidelity under various network sizes, noise levels, and field intensities.

Contribution

It introduces a quantum network model based on entangled coherent states and investigates its effectiveness for multi-party quantum communication under noise.

Findings

Success probability depends on network size, not field intensity for many participants.

Perfect information transfer possible with low field intensity and high noise strength.

Fidelity decreases smoothly in small networks but abruptly in larger ones.

Abstract

A quantum network is constructed via maximum entangled coherent states. The possibility of using this network to achieve communication between multi-participants is investigated. We showed that the probability of teleported unknown state successfully, depends on the size the used network. As the numbers of participants increases, the successful probability does not depend on the intensity of the field. The problem of implementing quantum teleportation protocol via a noise quantum network is discussed. We show one can send information perfectly with small values of the field intensity and larger values of the noise strength. The successful probability of this suggested protocol increases abruptly for larger values of the noise strength and gradually for small values. We show that for small size of the used quantum network, the fidelity of the teleported state decreases smoothly, while it decreases abruptly for larger size of network.