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. The team has demonstrated this by using their device to perform calculations on two different types of problems – one involving factoring large numbers with an extremely high degree of accuracy while another involves simulating how light
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.