Coherent control of electron spin qubits in silicon using a global field

Abstract

Silicon spin qubits promise to leverage the extraordinary progress in silicon nanoelectronic device fabrication over the past half century to deliver large-scale quantum processors. Despite the scalability advantage of using silicon technology, realising a quantum computer with the millions of qubits required to run some of the most demanding quantum algorithms poses several outstanding challenges, including how to control so many qubits simultaneously. Recently, compact 3D microwave dielectric resonators were proposed as a way to deliver the magnetic fields for spin qubit control across an entire quantum chip using only a single microwave source. Although spin resonance of individual electrons in the globally applied microwave field was demonstrated, the spins were controlled incoherently. Here we report coherent Rabi oscillations of single electron spin qubits in a planar SiMOS quantum dot device using a global magnetic field generated off-chip. The observation of coherent qubit control driven by a dielectric resonator establishes a credible pathway to achieving large-scale control in a spin-based quantum computer.

References in corpus (13)

• Surface codes: Towards practical large-scale quantum computation
• Driven coherent oscillations of a single electron spin in a quantum dot
• Coherent control of a single electron spin with electric fields
• An addressable quantum dot qubit with fault-tolerant control fidelity
• Electrically driven single electron spin resonance in a slanting Zeeman field
• Computing with spin qubits at the surface code error threshold
• Electrically controlling single spin qubits in a continuous microwave field
• Nanoscale broadband transmission lines for spin qubit control
• The SMART protocol -- Pulse engineering of a global field for robust and universal quantum computation
• An electrically driven spin qubit based on valley mixing
• Quantum Computation Protocol for Dressed Spins in a Global Field
• Implementation of the SMART protocol for global qubit control in silicon
• Fast coherent control of an NV- spin ensemble using a KTaO3 dielectric resonator at cryogenic temperatures

Cited by in corpus (13)

• High-fidelity operation and algorithmic initialisation of spin qubits above one kelvin
• Navigating the 16-dimensional Hilbert space of a high-spin donor qudit with electric and magnetic fields
• A 300 mm foundry silicon spin qubit unit cell exceeding 99% fidelity in all operations
• Bounds to electron spin qubit variability for scalable CMOS architectures
• High Fidelity Control of a Nitrogen-Vacancy Spin Qubit at Room Temperature using the SMART Protocol
• Non-reciprocal Pauli Spin Blockade in a Silicon Double Quantum Dot
• Entangling gates on degenerate spin qubits dressed by a global field
• Impact of electrostatic crosstalk on spin qubits in dense CMOS quantum dot arrays
• Photo-assisted spin transport in double quantum dots with spin-orbit interaction
• Improved Single-Shot Qubit Readout Using Twin RF-SET Charge Correlations
• A 2x2 quantum dot array in silicon with fully tuneable pairwise interdot coupling
• Spin-photon Qubits for Scalable Quantum Network
• Enhanced local addressability of a spin array with local exchange pulses and global microwave driving