Algorithmic decomposition for efficient multiple nuclear spin detection in diamond

Hyunseok Oh,Dohun Kim,M H Abobeih,T H Taminiau,Kiho Kim,Jiwon Yun,Kyung-Hoon Jung

doi:10.1038/s41598-020-71339-6

Hyunseok Oh, Dohun Kim + Show 5 more

Open Access

https://doi.org/10.1038/s41598-020-71339-6

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Abstract

Efficiently detecting and characterizing individual spins in solid-state hosts is an essential step to expand the fields of quantum sensing and quantum information processing. While selective detection and control of a few 13C nuclear spins in diamond have been demonstrated using the electron spin of nitrogen-vacancy (NV) centers, a reliable, efficient, and automatic characterization method is desired. Here, we develop an automated algorithmic method for decomposing spectral data to identify and characterize multiple nuclear spins in diamond. We demonstrate efficient nuclear spin identification and accurate reproduction of hyperfine interaction components for both virtual and experimental nuclear spectroscopy data. We conduct a systematic analysis of this methodology and discuss the range of hyperfine interaction components of each nuclear spin that the method can efficiently detect. The result demonstrates a systematic approach that automatically detects nuclear spins with the aid of computational methods, facilitating the future scalability of devices.

Highlights

IntroductionNV-center has spin quantum number S = 1 electron spin and interacts with nearby 13C nuclear spins via the hyperfine coupling
(a) Schematic diagram of the NV-center system
For each line found from the fit, A and B values are calculated by solving Eqs. (4), and (6). These hyperfine parameters are used as initial guesses to fit each dip iteratively based on Eq (2) to reach the final hyperfine interaction tensor components

Summary

Introduction

NV-center has spin quantum number S = 1 electron spin and interacts with nearby 13C nuclear spins via the hyperfine coupling. (c) Example of CPMG spectroscopy data stemming from nearby single nuclear spin. N = 32, applied magnetic field B0 = 400 G along the NV center axis, and hyperfine interaction tensor components A = B = 50 kHz. interaction tensor components of each nuclear spin. We demonstrate systematic and automatic decomposition of both virtual and experimental dynamical decoupling-based nuclear spectroscopy data. Our result provides a useful, fast and general tool for analyzing a wide variety of spectroscopy data; this is a key tool for expanding the number of available coherent resources in a system using hyperfine coupling to NV centers and nuclear spins

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Results

Conclusion