Photonic Quantum Computers

Our primary goal in this report is to analyze and quantify the commercial potential for quantum computers that use photonics for their main fabric. There are perhaps 15 models of such machines being commercialized at the present time with PsiQuantum having attracted the largest funding to date and Xanadu attracting considerable attention, too. But there are others as we report in this document, inevitably not as well known as PsiQuantum and Xanadu.

Of the serious contender technologies for quantum computers, photonic quantum computers seem the most “edgy” in that they (1) are the most strongly associated with measurement-based quantum computers (MBQCs) with their apparent path to significantly improved error correction and (2) offer a “natural path” to advanced quantum networks.