Memory-built-in quantum teleportation with photonic and atomic qubits

TL;DR

This paper demonstrates the first memory-built-in quantum teleportation between photonic and atomic qubits, enabling storage and retrieval of teleported states, advancing scalable quantum networks.

Contribution

It presents the experimental realization of teleporting a photonic qubit onto a remote atomic quantum memory, integrating teleportation with quantum memory.

Findings

Successful teleportation over 7 meters

Quantum state stored and read out for 8 microseconds

First demonstration of memory-built-in quantum teleportation

Abstract

The combination of quantum teleportation and quantum memory of photonic qubits is essential for future implementations of large-scale quantum communication and measurement-based quantum computation. Both steps have been achieved separately in many proof-of-principle experiments, but the demonstration of memory-built-in teleportation of photonic qubits remains an experimental challenge. Here, we demonstrate teleportation between photonic (flying) and atomic (stationary) qubits. In our experiment, an unknown polarization state of a single photon is teleported over 7 m onto a remote atomic qubit that also serves as a quantum memory. The teleported state can be stored and successfully read out for up to 8 micro-second. Besides being of fundamental interest, teleportation between photonic and atomic qubits with the direct inclusion of a readable quantum memory represents a step towards an efficient and scalable quantum network.