Google and IBM seem to be a little farther ahead than Intel in superconducting quantum computers, with IBM announcing its 50-qubit quantum computer in the fall of 2017 and Google announcing its 72-qubit quantum computer earlier this year.
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Although this technology is several years behind in terms of maturity, Intel believes that its advantages such as one million times smaller qubits and the possibility to bring the control electronics closer to the spin-qubits can eventually be used to scale quantum computers from about 1,000 qubits to over one million qubits.
According to Intel, a 1,000-qubit quantum computer should be available in about five years, and we should have million-qubit quantum computers in about ten years. Intel seems to agree with Google that quantum computers will start becoming truly useful when we go over one million qubits with minimal error rates.
However, Intel’s struggles with the 10nm process may have already allowed other foundries to catch-up or even soon surpass it in process technology. If that’s the case, then other companies such as Google and IBM may be able to maintain their leadership in quantum computing, assuming they also have their own plans and technologies necessary to scale their superconducting quantum chips above 1,000 qubits.
https://www.tomshardware.com/news/intel-spin-qubits-quantum-chips,37280.html
