Solid-state single-ion qudit arrays enable quantum computing at ambient room temperature without complex cryogenic infrastructure
https://www.eurekalert.org/news-releases/1143879 "individually addressable arrays of single-erbium ion qubits embedded inside silicon-based hollow nanopillars... CMOS fabrication compatible, record-long optical coherence >500 μs in telecom C-band, readout contrast >96%, narrow single-ion optical linewidths allow seamless integration into photonic integrated circuits for precise quantum processing/ sensing... reduces size, weight, power demands... aerospace navigation, distributed sensing networks, secure quantum telecommunications"