Abstract
Quantum teleportation allows a “disembodied” transmission of unknown quantum states between distant quantum systems. Yet, all teleportation experiments to date were limited to a two-dimensional subspace of quantized multiple levels of the quantum systems. Here, we propose a scheme for teleportation of arbitrarily high-dimensional photonic quantum states and demonstrate an example of teleporting a qutrit. Measurements over a complete set of 12 qutrit states in mutually unbiased bases yield a teleportation fidelity of 0.75(1), which is well above both the optimal single-copy qutrit state-estimation limit of and maximal qubit-qutrit overlap of , thus confirming a genuine and nonclassical three-dimensional teleportation. Our work will enable advanced quantum technologies in high dimensions, since teleportation plays a central role in quantum repeaters and quantum networks.
- Received 20 June 2019
DOI:https://doi.org/10.1103/PhysRevLett.123.070505
© 2019 American Physical Society
Physics Subject Headings (PhySH)
Synopsis
Quantum Teleportation Now Comes in 3D
Published 15 August 2019
The first experiment to teleport qutrits rather than qubits paves the way to teleporting the complete quantum state of a particle.
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