High-bandwidth microcoil for fast nuclear spin control
arXiv:2005.06837 · doi:10.1063/5.0013776
Abstract
The active manipulation of nuclear spins with radio-frequency (RF) coils is at the heart of nuclear magnetic resonance (NMR) spectroscopy and spin-based quantum devices. Here, we present a microcoil transmitter system designed to generate strong RF pulses over a broad bandwidth, allowing for fast spin rotations on arbitrary nuclear species. Our design incorporates: (i) a planar multilayer geometry that generates a large field of 4.35 mT per unit current, (ii) a 50 Ohm transmission circuit with a broad excitation bandwidth of approximately 20 MHz, and (iii) an optimized thermal management for removal of Joule heating. Using individual 13C nuclear spins in the vicinity of a diamond nitrogen-vacancy (NV) center as a test system, we demonstrate Rabi frequencies exceeding 70 kHz and nuclear pi/2 rotations within 3.4 us. The extrapolated values for 1H spins are about 240 kHz and 1 us, respectively. Beyond enabling fast nuclear spin manipulations, our microcoil system is ideally suited for the incorporation of advanced pulse sequences into micro- and nanoscale NMR detectors operating at low (<1 T) magnetic field.
arXiv comment8 pages, 5 figures. Submitted to Rev. Sci. Instr
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- Multidimensional spectroscopy of nuclear spin clusters in diamond
- Improved Electron-Nuclear Quantum Gates for Spin Sensing and Control
- Pulse sequence design for high field NMR with NV centers in dipolarly coupled samples
- Fast coherent control of nitrogen-14 spins associated with nitrogen-vacancy centers in diamonds using dynamical decoupling
- A Radio-Frequency Emitter Design for the Low-Frequency Regime in Atomic Experiments
- Enhanced microscale NMR spectroscopy of low-gyromagnetic ratio nuclei via hydrogen transfer