Calibrated electric fields shift transition frequencies, producing indistinguishable photons, advancing scalable optical quantum processors

https://phys.org/news/2025-11-quantum-photonic-chip-emitting-molecules.html

"solid-state emitters' spectral diffusion: photon emission frequency randomly wanders (color spread unpredictable) determined by environmental noise... overcome, enabling 2 identical sources to run in parallel, using tunable light-emitting single molecules embedded in single-crystalline organic nanosheets combined with silicon-nitride photonic circuits (waveguides) and metal microelectrodes... fluorescent molecules placed into waveguides where electric fields applied via microelectrodes"