Engineers from UNSW in Australia have developed a new chip design that makes it dramatically easier and cheaper to produce silicon quantum processors. A key feature of the design is that it spin-based silicon qubits can be spaced hundreds of nanometres apart and remain coupled. That dodges an issue that was expected to dog makers of larger qubit arrays: the need to space them at a distance of only 10-20 nanometres apart.
Engineers from the University of New South Wales in Australia have developed a new chip design that makes it dramatically easier and cheaper to produce silicon quantum processors. A key feature of the design is that it spin-based silicon qubits can be spaced hundreds of nanometres apart and remain coupled. That dodges an issue that was expected to dog makers of larger qubit arrays: the need to space them at a distance of only 10-20 nanometres apart.