Deterministic quantum teleportation of a path-encoded state using entangled photons

• URL: http://arxiv.org/abs/2502.05071v1
• Date: Fri, 07 Feb 2025 16:44:43 GMT
• Title: Deterministic quantum teleportation of a path-encoded state using entangled photons
• Authors: Akshai T. Krishnan, Kanad Sengupta, S. P. Dinesh, C. M. Chandrashekar,
• Abstract summary: We show a deterministic teleportation of an arbitrary qubit state using only a polarization entangled photon pair in a linear optical setup. This enables a deterministic teleportation of a qubit state in an optical scheme with high fidelity.
• Score: 2.331828779757202
• License:
• 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.

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