Caltech Research Enables Coherent Spectral Broadening On-Chip.

The article focuses on recent advances and commercial developments in integrated nonlinear photonics and quantum photonic computing. A Caltech research team led by Professor Alireza Marandi demonstrated a nanophotonic optical parametric oscillator (OPO) capable of multi-octave coherent frequency comb generation on-chip with ultralow energy thresholds, potentially enabling ultrabroadband light sources for communications, imaging, and spectroscopy. Building on this research, PINC Technologies, a Caltech spinout, secured $6.8 million in funding to commercialize scalable nonlinear photonic devices for applications including quantum information processing and biomedical sensing. Additionally, PsiQuantum raised $1 billion to develop million-qubit scale, fault-tolerant quantum computers using photonic qubits, aiming to overcome scalability challenges through semiconductor manufacturing techniques.