Highly efficient 25-dimension quantum memories based on cold atoms

https://phys.org/news/2024-01-approach-highly-efficient-high-dimensional.html

"signal photons, control light beam, Rubidium cold atomic ensemble storage medium and spatial light modulator encoding and decoding... photons sopped in the medium and stored, then retrieved by control light... expands memory capacity, increases transmittable capacity of quantum communication, enables fault-tolerant quantum computing... compatibility with programmable high-dimensional quantum states in 1 to 25 (possibly 100+) Hilbert space dimension range... future: high-dimensional quantum repeaters"