Telecom-Wavelength Quantum Repeater Node Based on a Trapped-Ion Processor
Telecom-Wavelength Quantum Repeater Node Based on a Trapped-Ion Processor
A quantum repeater node is presented based on trapped ions that act as single-photon emitters, quantum memories, and an elementary quantum processor. The node's ability to establish entanglement across two 25-km-long optical fibers independently, then to swap that entanglement efficiently to extend it over both fibers, is demonstrated. The resultant …