Phase driving hole spin qubits

Abstract

The spin-orbit interaction in spin qubits enables spin-flip transitions, resulting in Rabi oscillations when an external microwave field is resonant with the qubit frequency. Here, we introduce an alternative driving mechanism of hole spin qubits, where a far-detuned oscillating field couples to the qubit phase. Phase driving at radio frequencies, orders of magnitude slower than the microwave qubit frequency, induces highly non-trivial spin dynamics, violating the Rabi resonance condition. By using a qubit integrated in a silicon fin field-effect transistor (Si FinFET), we demonstrate a controllable suppression of resonant Rabi oscillations, and their revivals at tunable sidebands. These sidebands enable alternative qubit control schemes using global fields and local far-detuned pulses, facilitating the design of dense large-scale qubit architectures with local qubit addressability. Phase driving also decouples Rabi oscillations from noise, an effect due to a gapped Floquet spectrum and can enable Floquet engineering high-fidelity gates in future quantum processors.

References in corpus (8)

• Driven coherent oscillations of a single electron spin in a quantum dot
• Coherent control of a single electron spin with electric fields
• How to Enhance Dephasing Time in Superconducting Qubits
• Prospects for Spin-Based Quantum Computing
• Spin decoherence of a heavy hole coupled to nuclear spins in a quantum dot
• Universal phase shift and non-exponential decay of driven single-spin oscillations
• Hole spin qubits in Si FinFETs with fully tunable spin-orbit coupling and sweet spots for charge noise
• Ultrafast and Electrically Tunable Rabi Frequency in a Germanium Hut Wire Hole Spin Qubit

Cited by in corpus (10)

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• Controllable single spin evolution at sub-harmonics of electric dipole spin resonance enhanced by four-level Landau-Zener-St{ü}ckelberg-Majorana interference
• A spinless spin qubit
• Density Matrix Renormalization Group Study of Domain Wall Qubits
• All-electrical operation of a spin qubit coupled to a high-Q resonator
• Effect of disorder and strain on the operation of planar Ge hole spin qubits
• Quantum computation with hybrid parafermion-spin qubits
• Giant Rabi frequencies between qubit and excited hole states in silicon quantum dots