Nonlinear response and crosstalk of electrically driven silicon spin qubits

Abstract

Micromagnet-based electric dipole spin resonance (EDSR) offers an attractive path for the near-term scaling of dense arrays of silicon spin qubits in gate-defined quantum dots while maintaining long coherence times and high control fidelities. However, accurately controlling dense arrays of qubits using a multiplexed drive will require an understanding of the crosstalk mechanisms that may reduce operational fidelity. We identify a novel crosstalk mechanism whereby the Rabi frequency of a driven qubit is drastically changed when the drive of an adjacent qubit is turned on. These observations raise important considerations for scaling single-qubit control.

12 pages, 9 figures

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Cited by in corpus (15)

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• The SpinBus Architecture: Scaling Spin Qubits with Electron Shuttling
• Universal control of four singlet-triplet qubits
• Signal crosstalk in a flip-chip quantum processor
• Bichromatic Rabi Control of Semiconductor Qubits
• Single spin qubit geometric gate in a silicon quantum dot
• Single-step high-fidelity three-qubit gates by anisotropic chiral interactions
• Decoherence of electron spin qubit during transfer between two semiconductor quantum dots at low magnetic fields
• An elongated quantum dot as a distributed charge sensor
• Unified linear response theory of quantum electronic circuits
• A spinless spin qubit
• All-electrical operation of a spin qubit coupled to a high-Q resonator
• A dressed singlet-triplet qubit in germanium
• Micromagnet-free operation of electron spin qubits in Si/Si${}_{1-x}$Ge${}_x$ vertical double quantum dots
• Noise cross-correlations from single-shot measurements