Entanglement of Matter Qubits at a Distance

Pau Farrera, Georg Heinze, Hugues de Riedmatten

Light-matter entanglement combines the long-distance transmission advantage of photonic qubits with the storage and processing capabilities of atomic qubits. In this work we used a laser-cooled atomic cloud to generate entanglement between photonic time-bin qubits and atomic spin excitations.

Pau Farrera, Georg Heinzel, Hugues de Riedmatten

Light-matter entanglement combines the long-distance transmission advantage of photonic qubits with the storage and processing capabilities of atomic qubits. In this work we used a laser-cooled atomic cloud to generate entanglement between photonic time-bin qubits and atomic spin excitations. © 2019 The Author(s)

J.E. Avron, O. Kenneth

Mohammad Mehdi Sahrapour, Nancy Makri

Victor L. Krutyanskiy, M. Canteri, Martin Meraner +2 more

A three-qubit quantum network node based on trapped atomic ions is presented.The ability to establish entanglement between each individual qubit in the node and a separate photon that has traveled over a 101km-long optical fiber is demonstrated.By sending those photons through the fiber in close succession, a remote entanglement rate is achieved that is greater than when using only a single qubit in the node.Once extended to more qubits, this multimode approach can be a useful technique to boost entanglementdistribution rates in future long-distance quantum networks of light and matter.