Scientists from the Harvard School of Technical and Applied Sciences. John A. Poleson (SEAS) developed a new integrated photonic platform, which can store light and electrically control its frequency (or color) in the integrated circuit.
Microwave signals are distributed in wireless communication, but previously the researchers believed that they interact too poorly with photons. Harvard physicists managed to prove the opposite thanks
Initially, the team demonstrated that they can distribute light through nanofills with very small losses and control its intensity using embedded modulators. In subsequent studies, they combined and finalized these technologies by creating a system for programming photons with microwave radiation. The developed chip allows not only to control the change in the frequency of photons, but also store them and generate light on demand, which was previously impossible.
According to scientists, the unique properties of niobate lithium, with its low optical losses and strong electro-optical nonlinearity, provide dynamic control of radiation in the programmable system. The invention can be used to process photonic quantum information and optical signals in microwave photonics, radio astronomy, radar and other spheres.
At the moment, scientists are engaged in the development of optical waveguides and microwave schemes with even less losses based on the same architecture. This will allow the system to work with 100% efficiency, and will allow you to implement a quantum cloud project — a distributed network of quantum computers connected through secure optical communication channels.
Physics from Canadian University Alberta presented no less innovative technology for future quantum computers. They developed «