Sensing coherent dynamics of electronic spin clusters in solids

Abstract

We present experimental observations and a study of quantum dynamics of strongly interacting electronic spins, at room temperature in the solid state. In a diamond substrate, a single nitrogen vacancy (NV) center coherently interacts with two adjacent S = 1/2 dark electron spins. We quantify NV-electron and electron-electron couplings via detailed spectroscopy, with good agreement to a model of strongly interacting spins. The electron-electron coupling enables an observation of coherent flip-flop dynamics between electronic spins in the solid state, which occur conditionally on the state of the NV. Finally, as a demonstration of coherent control, we selectively couple and transfer polarization between the NV and the pair of electron spins. These results demonstrate a key step towards full quantum control of electronic spin registers in room temperature solids.

References in corpus (11)

• Scalable quantum register based on coupled electron spins in a room temperature solid
• Dynamic polarization of single nuclear spins by optical pumping of NV color centers in diamond at room temperature
• Polarization and readout of coupled single spins in diamond
• Depolarization dynamics in a strongly interacting solid-state spin ensemble
• Perfect state transfer in long-range interacting spin chains
• Robust quantum-network memory using decoherence-protected subspaces of nuclear spins
• Coherence and control of quantum registers based on electronic spin in a nuclear spin bath
• Optical polarization of nuclear ensembles in diamond
• Quantum Zeno subspaces by repeated multi-spin projections
• Generation of a coherent electronic spin cluster in diamond
• Electron paramagnetic resonance of the ${\mathrm{N}}_2{\mathrm{V}}^{-}$ defect in ${}^{15}\mathrm{N}$-doped synthetic diamond

Cited by in corpus (16)

• Atomic-scale imaging of a 27-nuclear-spin cluster using a single-spin quantum sensor
• Entanglement of dark electron-nuclear spin defects in diamond
• Individual Control and Readout of Qubits in a Sub-Diffraction Volume
• Identification and control of electron-nuclear spin defects in diamond
• Environment-assisted quantum-enhanced sensing with electronic spins in diamond
• Understanding the Linewidth of the ESR Spectrum Detected by a Single NV Center in Diamond
• Improved entanglement detection with subspace witnesses
• Self-consistent noise characterization of quantum devices
• Control of an environmental spin defect beyond the coherence limit of a central spin
• Exact Entanglement dynamics in Three Interacting Qubits
• Quantum spin probe of single charge dynamics
• Optimization of the double electron-electron resonance for C-centers in diamond
• Detection of Electron Paramagnetic Resonance of Two Electron Spins Using a Single NV Center in Diamond
• Room-temperature Composite-pulses for Robust Diamond Magnetometry
• Quantum decoherence of nitrogen-vacancy spin ensembles in a nitrogen spin bath in diamond under dynamical decoupling
• Ground and Applied-Field-Driven Magnetic States of Antiferromagnets