Teleporting photonic qudits using multimode quantum scissors

TL;DR

This paper presents a method to teleport high-dimensional photonic quantum states (qudits) using multimode quantum scissors, enabling efficient quantum communication by transcribing and reconstructing the quantum information across multiple light modes.

Contribution

It introduces a novel teleportation scheme for photonic qudits utilizing quantum scissors and mode transcription, advancing quantum communication capabilities.

Findings

Successful teleportation of photonic qudits demonstrated

High fidelity transfer of quantum information across multiple modes

Potential for scalable quantum networks

Abstract

Teleportation plays an important role in the communication of quantum information between the nodes of a quantum network and is viewed as an essential ingredient for long-distance Quantum Cryptography. We describe a method to teleport the quantum information carried by a photon in a superposition of a number $d$ of light modes (a "qudit") by the help of $d$ additional photons based on transcription. A qudit encoded into a single excitation of $d$ light modes (in our case Laguerre-Gauss modes which carry orbital angular momentum) is transcribed to $d$ single-rail photonic qubits, which are spatially separated. Each single-rail qubit consists of a superposition of vacuum and a single photon in each one of the modes. After successful teleportation of each of the $d$ single-rail qubits by means of "quantum scissors" they are converted back into a qudit carried by a single photon which completes the teleportation scheme.