New Method Generates Photons That Are Virtually Indistinguishable
Researchers at Paderborn University, the University of Basel, and Ruhr University Bochum demonstrated a photon source based on biexciton decay in quantum dots placed inside an optical cavity. The method increased the indistinguishability of emitted photons from about 60% to roughly 90%. The work is reported in Physical Review Letters.
OutlookPlausible
If the biexciton-cavity source can be fabricated repeatably, it could be integrated into prototype photonic quantum processors, improving two-photon interference fidelity and supporting more reliable on-chip entanglement generation within the next two years.