Cesium atomic vapor-filled 3D-nanoprinted light-cage room-temperature quantum memory chips integrate into existing photonic networks

https://www.eurekalert.org/news-releases/1111579

"light cages: hollow-core waveguides created via 2-photon polymerization lithography fill with atoms in days (was months)... coated structure stable for 5 years... fabrication accurate within 2 nm so multiple memories on same chip perform identically... stores information by converting light pulses into atomic excitations... light pulses guided into cage, mapped onto cesium atoms, optical control laser reverses/ releases stored light on demand... parallel photonic synchronization for long-distance quantum repeaters"