Xanadu is a quantum company that can handle everything from photonic hardware to developing frameworks for QML or Quantum Machine Learning. Optical quantum interconnects for quantum communications and etanglement distribution. Not really, some critics say. Rigetti Computing is a Berkeley, California-based developer of hardware and software for quantum computers. Privacy Policy. It does fundamental work on quantum error correction and control systems irrespective of the type of qubit. As for the long term, according to its director of quantum hardware , Intel is eyeing nothing less than a million-qubit system — the number at which truly transformational power will occur.