Efficient Microwave Spin Control of Negatively Charged Group-IV Color Centers in Diamond

Abstract

In this work, we provide a comprehensive overview of the microwave-induced manipulation of electronic spin states in negatively charged group-IV color centers in diamond with a particular emphasis on the influence of strain. Central to our investigation is the consideration of the full vectorial attributes of the magnetic fields involved, which are a dc field for lifting the degeneracy of the spin levels and an ac field for microwave control between two spin levels. We observe an intricate interdependence between their spatial orientations, the externally applied strain, and the resultant efficacy in spin state control. In most work to date the ac and dc magnetic field orientations have been insufficiently addressed, which has led to the conclusion that strain is indispensable for the effective microwave control of heavier group-IV vacancies, such as tin- and lead-vacancy color centers. In contrast, we find that the alignment of the dc magnetic field orthogonal to the symmetry axis and the ac field parallel to it can make the application of strain obsolete for effective spin manipulation. Furthermore, we explore the implications of this field configuration on the spin's optical initialization, readout, and gate fidelities.

13 Pages, 7 figures

References in corpus (14)

• High-fidelity preparation, gates, memory and readout of a trapped-ion quantum bit
• Indistinguishable photons from separated silicon-vacancy centers in diamond
• Silicon-Vacancy Spin Qubit in Diamond: A Quantum Memory Exceeding 10 ms with Single-Shot State Readout
• Stark shift control of single optical centers in diamond
• All-optical initialization, readout, and coherent preparation of single silicon-vacancy spins in diamond
• Electron-phonon processes of the silicon-vacancy centre in diamond
• Coherent spin control of a nanocavity-enhanced qubit in diamond
• Coherent Acoustic Control of a Single Silicon Vacancy Spin in Diamond
• Initialization and Readout of Nuclear Spins via negatively charged Silicon-Vacancy Center in Diamond
• Narrow-linewidth tin-vacancy centers in a diamond waveguide
• Microwave Spin Control of a Tin-Vacancy Qubit in Diamond
• Optically coherent nitrogen-vacancy defect centers in diamond nanostructures
• Germanium Vacancy in Diamond Quantum Memory Exceeding 20 ms
• 'Sawfish' Photonic Crystal Cavity for Near-Unity Emitter-to-Fiber Interfacing in Quantum Network Applications

Cited by in corpus (6)

• Coherent microwave, optical, and mechanical quantum control of spin qubits in diamond
• Single-Shot Readout and Weak Measurement of a Tin-Vacancy Qubit in Diamond
• Fabrication of Sawfish photonic crystal cavities in bulk diamond
• Silicon T centre hyperfine structure and memory protection schemes
• High-fidelity control of a ${}^{13}$C nuclear spin coupled to a tin-vacancy center in diamond
• Software Framework for Optically Accessible Quantum Memory Using Group-IV Color Centers in Diamond