Fidelity in Quantum Teleportation of 2 Qubits with Decoherent Channel
Yoga A. Darmawan (a*), Ananto A. Prabowo (b)

(a*) Faculty of Science and Technology, Airlangga University
Jl. Dr. Ir. H. Soekarno, Mulyorejo, Kec. Mulyorejo, Surabaya, Jawa Timur 60115, Indonesia
*yogaagungdarmawan[at]gmail.com
(b) Faculty of Science and Data Analytics, Sepuluh Nopember Institute of Technology
Jl. Teknik Kimia, Keputih, Kec. Sukolilo, Surabaya, Jawa Timur 60117, Indonesia

Abstract

This study discusses the one-way quantum teleportation of 2 qubits through a 4-qubit Bell state channel that is subject to decoherence. Decoherence is one of the unavoidable effects of noise in the transmission process. In the case of quantum teleportation, noise has an impact on the channel, causing changes in its state due to noise. In the absence of noise, teleportation occurs in an ideal state, resulting in a fidelity value of 1, signifying successful information transfer in the ideal scenario. However, when examined in the presence of noise, fidelity is not equal to 1 due to the influence of noise factors and the coefficient of the transmitted state. These noise factors indicate the strength of the noise. The stronger the noise, the lower the fidelity becomes.

Keywords: Quantum Teleportation- Decoherence Noise- Fidelity

Topic: Other Related Topics