Microscopic-size optical phase modulator enables efficient control of lasers required to operate many qubits for large-scale quantum computers

https://www.eurekalert.org/news-releases/1109604

"quantum computers using trapped-ion or trapped-neutral-atom systems rely on precise laser beams to communicate with and control individual qubits... uses microwave-frequency vibrations to manipulate laser light... generating, with high stability and efficiency, many copies of laser with slightly different frequencies... higher density of components, scalable CMOS fabrication, high efficiency consuming 80X less microwave power, reduced heat allowing more channels placed close together on single chip"