Long distance multiplexed quantum teleportation from a telecom photon to a solid-state qubit

Dario Lago-Rivera (), Jelena V. Rakonjac, Samuele Grandi and Hugues de Riedmatten ()
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Dario Lago-Rivera: The Barcelona Institute of Science and Technology
Jelena V. Rakonjac: The Barcelona Institute of Science and Technology
Samuele Grandi: The Barcelona Institute of Science and Technology
Hugues de Riedmatten: The Barcelona Institute of Science and Technology

Nature Communications, 2023, vol. 14, issue 1, 1-6

Abstract: Abstract Quantum teleportation is an essential capability for quantum networks, allowing the transmission of quantum bits (qubits) without a direct exchange of quantum information. Its implementation between distant parties requires teleportation of the quantum information to matter qubits that store it for long enough to allow users to perform further processing. Here we demonstrate long distance quantum teleportation from a photonic qubit at telecom wavelength to a matter qubit, stored as a collective excitation in a solid-state quantum memory. Our system encompasses an active feed-forward scheme, implementing a conditional phase shift on the qubit retrieved from the memory, as required by the protocol. Moreover, our approach is time-multiplexed, allowing for an increase in the teleportation rate, and is directly compatible with the deployed telecommunication networks, two key features for its scalability and practical implementation, that will play a pivotal role in the development of long-distance quantum communication.

Date: 2023
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DOI: 10.1038/s41467-023-37518-5

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