Deterministic quantum teleportation of a path-encoded state using entangled photons
Abstract
Quantum teleportation enables a way to transmit an arbitrary qubit state from one place to an other. A standard scheme for teleportation in optical setup involve three photons, an entangled photon pair and a photon carrying quantum state to be teleported. The interaction between the photons in the scheme makes quantum teleportation probabilistic. Here we demonstrate a deterministic teleportation of an arbitrary qubit state using only a polarization entangled photon pair in a linear optical setup. By introducing the path degree of freedom to one of the entangled photon and encoding the arbitrary qubit state into it, we demonstrate 100\% Bell State Measurement (BSM) outcome. This enables a deterministic teleportation of a qubit state in an optical scheme with high fidelity. We report an average teleportation fidelity of 88.00%. The dependency of fidelity on the visibility of single-photon interferometer used for path qubit state shows the possibility of further improving the fidelity of quantum teleportation.
Cite
@article{arxiv.2502.05071,
title = {Deterministic quantum teleportation of a path-encoded state using entangled photons},
author = {Akshai T. Krishnan and Kanad Sengupta and S. P. Dinesh and C. M. Chandrashekar},
journal= {arXiv preprint arXiv:2502.05071},
year = {2025}
}
Comments
6 pages, 6 figures