manipulating photonic entangled states on a chip

Quantum computing is a dream that would foster new growth in the world of technology, which is constantly striving for efficiency enhancement and surreal speeds. So far the scientists have succeeded in quantum optics that entails a single photon (a single photon particle can be easily manipulated at the speed of light) on a chip. A breakthrough in this field has been achieved by entailing four photons on a single chip, thanks to Prof Jeremy O’Brien and his research team from the University of Bristol.

This team has moved closer to quantum computation on a single chip. The group used a microscopic metal electrode clubbed onto a silicon chip to facilitate light transmission inspired by the working principle of fiber optics.

Voltage was then applied across the electrode which changed the temperature of the silicon chip underneath. This temperature change brought about a variance in the path of photons in a very controlled manner. With this achievement, the next agenda of the group would be to focus on technology that could bring such chips into mass production.

Via: Gizmag