Quantum computers rely on processing the information stored in quantum bits (qubits) that must be typically cooled well below 1 K for proper operation. Performing operations on qubits requires a classical (i.e. non-quantum) electronic interface, which is currently implemented at room temperature for the few qubits available today. However, future quantum processors will comprise thousands or even millions of qubits. To avoid the unpractical requirement of thousands of cables from the cryogenic refrigerator to the room-temperature electronics, the electronic interface must operate at cryogenic temperatures as close as possible to the qubits. To address those challenges, this talk will show the use of standard CMOS technology to build a complex System-on-Chip operating at 4 K and able to drive qubits with microwave pulse in the frequency range from 6 to 20 GHz. As the most complex cryogenic CMOS system ever demonstrated, it is a fundamental stepping stones towards future cryogenic electronic interfaces the way for practical large-scale quantum computers.
Fabio Sebastiano, EWI/QuTech
Lees ook: De lange weg naar grootschalige kwantumcomputers
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