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Abstract Silicon spin qubits in gate-defined quantum dots leverage established semiconductor infrastructure and offer a scalable path toward transformative quantum technologies. Holes spins in silicon offer compact all-electrical control, whilst retaining the salient features of a quantum dot qubit architecture. However, silicon hole spin qubits are not as advanced as electrons, due to increased susceptibility to disorder and more complex spin physics.
Abstract Silicon spin qubits are a promising platform for quantum computing due to their high coherence, controllability, and CMOS manufacturability, yet scalable implementations have so far been limited to a few qubits. Here, to take a step towards larger qubit systems, we tune and coherently control an eight-dot linear array of silicon spin qubits fabricated in a 300 mm CMOS-compatible foundry process, establishing operational scalability beyond the two-qubit regime.
Towards useful quantum computers: better qubits, more qubits Using quantum states for processing information has the potential to swiftly address complex problems that are beyond the reach of classical computers. Over the past decades, tremendous progress has been made in developing the critical building blocks underlying quantum computing technology.
Using quantum states for processing information has the potential to swiftly address complex problems that are beyond the reach of classical computers. Over the past decades, tremendous progress has been made in developing the critical building blocks of the underlying quantum computing technology. In its quest to develop useful quantum computers, the quantum community focuses on two basic pillars: developing ‘better’ qubits and enabling ‘more’ qubits.
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