Quantum teleportation between a single-rail single-photon qubit and a coherent state qubit using hybrid entanglement under decoherence effects

TL;DR

This paper investigates quantum teleportation between different optical qubit types using hybrid entanglement, analyzing effects of decoherence on fidelity and success probability, and comparing different hybrid entanglement schemes.

Contribution

It introduces a method for teleporting between single-rail single-photon and coherent state qubits under decoherence, highlighting directional fidelity advantages and comparing hybrid entanglement types.

Findings

Teleportation from single-rail single-photon to coherent state qubits has higher fidelity.

Decoherence impacts success probability and fidelity differently depending on qubit types.

Hybrid entanglement between polarized single-photon and coherent states shows distinct performance characteristics.

Abstract

We study quantum teleportation between two different types of optical qubits using hybrid entanglement as a quantum channel under decoherence effects. One type of qubit employs the vacuum and single photon states for the basis, called a single-rail single-photon qubit, and the other utilizes coherent states of opposite phases. We find that teleportation from a single-rail single-photon qubit to a coherent state qubit is better than the opposite direction in terms of fidelity and success probability. We compare our results with those using a different type of hybrid entanglement between a polarized single-photon qubit and a coherent state.