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

TL;DR

This paper demonstrates long-distance quantum teleportation from a telecom photon to a solid-state qubit, integrating active feed-forward and time-multiplexing for scalable quantum networks.

Contribution

It presents the first implementation of telecom-to-solid-state qubit teleportation with active feed-forward and time-multiplexing, enhancing practicality for quantum communication.

Findings

Successful teleportation from telecom photon to solid-state qubit

Implementation of active feed-forward with phase correction

Time-multiplexed approach increases teleportation rate

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 phase shift on the qubit retrieved from the memory, therefore completing 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.