Computing with photonic quantum computers

Photonic quantum computers are single-purpose quantum computers that have recently attracted the attention of some start-up companies in the world. These computers are able to solve a very difficult problem, which researchers generally believe is beyond the reach of classical computers. Computing with such computers is different from computing with all-purpose, programmable quantum computers. In this presentation, we will first discuss in detail the basis of computing with photonic quantum computers, and then we will briefly mention the state of existing hardware of photonic quantum computers in the world. At the end, we examine the value of investing in such quantum computers for the country of Iran.