A Crossbar Network for Silicon Quantum Dot Qubits

Understand

The spin states of single electrons in gate-defined quantum dots satisfy crucial requirements for a practical quantum computer.

• These include extremely long coherence times, high-fidelity quantum operation, and the ability to shuttle electrons as a mechanism for on-chip flying qubits.
• In order to increase the number of qubits to the thousands or millions of qubits needed for practical quantum information we present an architecture based on shared control and a scalable number of lines.
• Crucially, the control lines define the qubit grid, such that no local components are required.