Experimental quantum repeater without quantum memory
arXiv:1908.05351 · doi:10.1038/s41566-019-0468-5
Abstract
Quantum repeaters -- important components of a scalable quantum internet -- enable the entanglement to be distributed over long distances. The standard paradigm for a quantum repeater relies on a necessary demanding requirement of quantum memory. Despite significant progress, the limited performance of quantum memory makes practical quantum repeaters still a great challenge. Remarkably, a proposed all-photonic quantum repeater avoids the need for quantum memory by harnessing the graph states in the repeater nodes. Here we perform an experimental demonstration of an all-photonic quantum repeater using linear optics. By manipulating a 12-photon interferometer, we implement a 2-by-2 parallel all-photonic quantum repeater, and observe an 89% enhancement of entanglement-generation rate over the standard parallel entanglement swapping. These results open a new way towards designing repeaters with efficient single-photon sources and photonic graph states, and suggest that the all-photonic scheme represents an alternative path -- parallel to that of matter-memory-based schemes -- towards realizing practical quantum repeaters.
arXiv commentPublished online in Nature Photonics
References in corpus (18)
- Experimental quantum teleportation
- Long-distance quantum communication with atomic ensembles and linear optics
- Quantum Computing
- On the Measurement of Qubits
- Secure Quantum Key Distribution
- Satellite-relayed intercontinental quantum network
- Feasible Entanglement Purification for Quantum Communication
- All photonic quantum repeaters
- Experimental demonstration of a BDCZ quantum repeater node
- Entanglement Distillation between Solid-State Quantum Network Nodes
- Functional Quantum Nodes for Entanglement Distribution over Scalable Quantum Networks
- Ultrafast and Fault-Tolerant Quantum Communication across Long Distances
- An efficient quantum light-matter interface with sub-second lifetime
- Rate-distance tradeoff and resource costs for all-optical quantum repeaters
- Measurement-based quantum repeaters
- Ultrafast Long-Distance Quantum Communication with Static Linear Optics
- Ultrafast Fault-Tolerant Long-Distance Quantum Communication with Static Linear Optics
- Repeat-until-success quantum repeaters
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