Improving security and bridging long distances in #QuantumInternet - that's what the new project #QRN is working on by developing #QuantumRepeaters. Coordinated by @uni-saarland.de and funded by #BMBF. Find out more👉 sohub.io/5iui

Researchers prove new composition theorems for quantum entanglement maps in 3-level systems, showing how 1-undistillable states block terminal entanglement generation through entanglement swapping.

#QuantumEntanglement #QuantumRepeaters #Research

Researchers propose a polariton-based Bell-state analyzer for quantum repeaters, achieving lower interaction thresholds than scalar Kerr gates and fourth-order bandwidth error scaling with potential for efficient quantum entanglement swapping.

#QuantumRepeaters #QuantumPhotonics #Research

Fujiwara's team demonstrates a complete quantum repeater node using diamond NV centres, achieving 78% process fidelity and 10x photon collection efficiency gain through repeat-until-success protocol for scalable quantum networks.

#QuantumNetworks #QuantumRepeaters #News

Sparse network topologies maximize Bell-pair extraction efficiency in quantum repeaters. Study reveals optimal performance at low-to-moderate edge densities, reshaping resource requirements for practical quantum internet architectures.

#QuantumNetworking #QuantumRepeaters #Research

DAHR protocol exploits multiple photon degrees of freedom to dramatically improve quantum repeater efficiency, requiring 5-11x fewer photons than traditional approaches while maintaining fidelity in long-distance entanglement distribution.

#QuantumNetworking #QuantumRepeaters #Research

Demonstrated entanglement distribution between telecom photons and stored matter across 25.3 km fiber with storage of 8,235 temporal quantum modes. Uses rare-earth-doped crystal quantum memory for fiber-based quantum repeater nodes.

#QuantumNetworking #QuantumRepeaters #Research

New joint project to investigate #QuantumRepeaters designed to provide for secure #QuantumCommunication networks of the future / German Federal Ministry of Education and Research #BMBF will fund the new partnership project with EUR 20 million f...
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Demonstrated a quantum repeater segment using two trapped 40Ca+ ions achieving ≥68% fidelity Bell state entanglement over 440m of fiber with telecom-wavelength photons. Key advance for scalable quantum networks using efficient frequency conversion.

#QuantumRepeaters #QuantumNetworking #Research

Silicon photonic chips enable reconfigurable entanglement purification that preserves residual entanglement for further processing, advancing practical on-chip quantum repeaters through hyperentanglement exploitation.

#QuantumPhotonics #EntanglementPurification #QuantumRepeaters

Unified architecture bridging memory-based and all-photonic quantum repeaters through modular half-RGS building blocks, enabling practical long-distance quantum communication with integrated error management and dynamic resource scheduling.

#QuantumNetworking #QuantumRepeaters #QuantumInternet

Researchers demonstrated metropolitan-scale quantum repeaters generating Bell-certified entanglement over 14.5 km with 78.6% fidelity—a record combining single-photon efficiency with phase robustness for scalable quantum networks.

#QuantumRepeaters #QuantumNetworking #BellTest

Novel optimal memory allocation strategy for quantum repeaters significantly improves entanglement fidelity while maintaining comparable rates to standard repeaters, enabling more efficient quantum networks.

#QuantumRepeaters #QuantumNetworks #Research

Comprehensive performance analysis shows satellite quantum repeaters with on-board memories can outcompete direct downlink methods in high-loss regimes, but memory capacity requirements depend critically on orbital geometry and system efficiency.

#QuantumNetworking #QuantumRepeaters #SatelliteQKD

EUR 20 million #BMBF funding for new joint research project to investigate #QuantumRepeaters designed to provide for secure #QuantumCommunication networks of the future / Subproject at #MainzUniversity 👉 press.uni-mainz.de/new-joint-pr...

#QRN #QuantumNetworks #QuantumComputers #ITsecurity