Lasers Eyed as Way Forward for Quantum Encryption of Data, Cryptocurrencies

Researchers at the University of Southern California developed a hair-sized, low-power frequency comb by applying a single layer of organic molecules to a laser, enabling conversion of a single wavelength into many synchronized wavelengths that can generate entangled photons; this advance could make quantum-encryption practical for mobile devices and help secure data and cryptocurrencies, though integration and manufacturing challenges remain.