Quantum Computing Startups funded by Y Combinator (YC) 2026

Quantum computers will allow humanity to understand the world at its most fundamental level, enabling the acceleration of drug discovery and the development of new materials. Currently, quantum engineers spend days, sometimes weeks, manually getting their silicon quantum chips to operational conditions to realize two qubits. A qubit is the information-carrying unit of a quantum computer, analogous to a bit in a classical computer. We need billions of qubits to make a useful quantum computer. Therefore, automation software will be vital to realizing this goal. Conductor Quantum will develop AI software to remove the human from the loop, enable the scaling of quantum technology.

Menten AI designs protein drugs and enzymes using quantum computing and machine learning. Their technology leapfrogs current computational methods making it possible to design previously intractable proteins. The team created the first protein design algorithm for current and near-term quantum computers and created the world’s first protein designed on a quantum computer. They are now working on 3 new proteins, including a peptide to prevent the spread of viruses like Covid-19. They have 2 paid pilot projects with multinational chemical companies and 4 LOI’s with pharma and biotech companies.

Rigetti Computing is building the world’s most powerful computers to help solve humanity’s most pressing and important problems. These systems will perform computations that today’s fastest supercomputers are incapable of — unlocking entirely new classes of problems and offering a direct path to solutions. We are scientists, engineers, builders, and visionaries. We believe quantum computing is going to significantly affect health care, how we treat disease, how we generate energy, and how we feed humanity. Rigetti is the only company deploying full-stack solutions for hybrid classical/quantum computing. Our 19-qubit quantum computer is available online through our Forest platform, and the first commercially useful applications are already under exploration. We were founded in 2013 by Chad Rigetti, and are located Berkeley and Fremont, California.