Quantum Teleportation Between Distant Matter Qubits

TL;DR

This paper demonstrates quantum teleportation of a qubit between two distant atomic memories with high fidelity, using entanglement and photon detection, advancing quantum communication capabilities.

Contribution

It presents the first successful teleportation of quantum information between distant matter qubits using heralded entanglement and photon interference.

Findings

Achieved 90% average fidelity in teleporting a qubit.

Successfully teleported quantum states between atoms separated by 1 meter.

Established a scalable method for quantum communication using atomic qubits.

Abstract

Quantum teleportation is the faithful transfer of quantum states between systems, relying on the prior establishment of entanglement and using only classical communication during the transmission. We report teleportation of quantum information between atomic quantum memories separated by about 1 meter. A quantum bit stored in a single trapped ytterbium ion (Yb+) is teleported to a second Yb+ atom with an average fidelity of 90% over a replete set of states. The teleportation protocol is based on the heralded entanglement of the atoms through interference and detection of photons emitted from each atom and guided through optical fibers. This scheme may be used for scalable quantum computation and quantum communication.