January 18, 2025
The chain complex relevant to the distance balancing construction.

Local testability of distance-balanced quantum codes

npj Quantum Information, Published online: 20 November 2024; doi:10.1038/s41534-024-00908-8 In this paper, scientists proved a lower bound on the soundness of quantum locally testable codes under the distance balancing construction of Evra et al. Their […]

Quantum physics: record entanglement of quantum memories

Record entanglement of quantum memories

Researchers from LMU and Saarland University have entangled two quantum memories over a 33-kilometer-long fiber optic connection — a record and an important step toward the Quantum Internet. This is the longest distance so far […]

Components of a quantum repeater network.

A quantum router architecture for high-fidelity entanglement

The past decade has seen tremendous progress in experimentally realizing the building blocks of quantum repeaters. Repeater architectures with multiplexed quantum memories have been proposed to increase entanglement distribution rates, but an open challenge is […]

A particle of light from the single photon source (below) is stored in the vapor cell (above). A simultaneously emitted second photon is revealed by a detector (right), which triggers the control laser pulse and thereby initiates the storage process. (Image: Department of Physics/University of Basel)

Quantum network nodes with warm atoms

Physicists at the University of Basel, Switzerland, have now developed a network node for quantum communication networks that can store single photons in a vapor cell and pass them on later. In quantum communication networks, […]