PsiQuantum

PsiQuantum is a company that is building a general-purpose silicon photonic quantum computer. The company was founded in 2016 by Jeremy O'Brien, previously a Professor of Physics and Electrical Engineering at Stanford University and director of the Centre for Quantum Photonics at Bristol University. In 2019, PsiQuantum raised $230M in funding, investors ­include a venture capital fund co-founded by former Google executive Andy ­Rubin. The company is based in Slough, Berkshire and Palo Alto, California.

Based on technology developed at the University of Bristol PsiQuantum is using a silicon-based photonic approach to manufacturing a quantum computer in a CMOS silicon fab. PsiQuantum aims to offer numerous advantages compared to other quantum computing technologies, such as low noise, low-temperature operation, and no atomic-scale fabrication.