Silicon CMOS architecture for a spin-based quantum computer.

Area of Science:

• Quantum Computing
• Semiconductor Physics
• Quantum Information Science

Background:

• Advances in quantum error correction and qubit fidelity are paving the way for large-scale quantum computers.
• The classical-quantum interface is a critical but underdeveloped area for quantum system integration.

Purpose of the Study:

• To propose a novel architecture for a silicon-based quantum computer processor.
• To demonstrate the feasibility of a dense, scalable two-dimensional qubit system using CMOS technology.

Main Methods:

• Utilizing transistor-based control circuits and charge-storage electrodes for qubit operation.
• Defining qubits by single electron spin states in quantum dots, coupled via exchange interactions.
• Employing microwave cavities for qubit control and gate-based dispersive readout for measurement.

Main Results:

• Implementation of a spin qubit surface code, demonstrating potential for universal quantum computation.
• Showcasing a transistor-based control system for operating a dense, scalable 2D qubit array.
• Validation of a CMOS-compatible architecture for quantum processor development.

Conclusions:

• The proposed architecture offers a viable path towards large-scale quantum computing using silicon.
• Addressing challenges in qubit control, coupling, and readout is crucial for realizing this scalable system.
• This work highlights the potential of CMOS technology in advancing quantum processor development.