Efficient Teleportation between Remote Single-Atom Quantum Memories

Abstract

We demonstrate teleportation of quantum bits between two single atoms in distant laboratories. Using a time-resolved photonic Bell-state measurement, we achieve a teleportation fidelity of (88.0+/-1.5)%, largely determined by our entanglement fidelity. The low photon collection efficiency in free space is overcome by trapping each atom in an optical cavity. The resulting success probability of 0.1% is almost 5 orders of magnitude larger than in previous experiments with remote material qubits. It is mainly limited by photon propagation and detection losses and can be enhanced with a cavity-based deterministic Bell-state measurement.

7 pages, 4 figures, 1 table

References in corpus (11)

• The Quantum Internet
• Experimental quantum teleportation
• An Elementary Quantum Network of Single Atoms in Optical Cavities
• Quantum teleportation using active feed-forward between two Canary Islands
• Quantum Teleportation Between Distant Matter Qubits
• Quantum teleportation and entanglement distribution over 100-kilometre free-space channels
• A Single-Atom Quantum Memory
• Quantum Beat of Two Single Photons
• Cavity-based single atom preparation and high-fidelity hyperfine state readout
• Photon-Photon Entanglement with a Single Trapped Atom
• Lossless State Detection of Single Neutral Atoms

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• Experimental generation of multiple quantum correlated beams from hot rubidium vapor
• Heralded Storage of a Photonic Quantum Bit in a Single Atom
• Entanglement of distinguishable quantum memories
• Controlled Remote State Preparation via General Pure Three-Qubit State