September 26, 2022

High-dimensional quantum teleportation

High-dimensional quantum teleportation

A team at the University of Science and Technology of China (USTC) has demonstrated the teleportation of high-dimensional states in a three-dimensional six-photon system.

Compared with two-dimensional systems, high-dimensional system quantum networks have the advantages of higher channel capacity and better security.

In a linear optical system, auxiliary entanglement is the key to realizing high-dimensional quantum teleportation. The researchers exploited the spatial mode (path) to encode the three-dimensional states that has been demonstrated to extremely high-fidelity, and used an auxiliary entangled photon pair to perform the High-Dimensional Bell State Measurement (HDBSM), demonstrating the teleportation of a three-dimensional quantum state using the spatial mode of a single photon.

In this work, the fidelity of teleportation process matrix could reach 0.5967, which is seven standard deviations above the fidelity of 1/3, which proves the teleportation is both non-classical and genuinely three dimensional.

This study paves the way to rebuild complex quantum systems remotely and to construct complex quantum networks. (

The paper has been published in Physical Review Letters.

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