Dynamically Polarizing Spin Register of NV Centers in Diamond using Chopped Laser Pulses

Nuclear spins nearby nitrogen-vacancy (NV) centers in diamond are excellent quantum memory for quantum computing and quantum sensing, but are difficult to be initialized due to their weak interactions with the environment. Here we propose and demonstrate a magnetic-field-independent, deterministic a...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2019-07
Main Authors: Xu, Nanyang, Tian, Yu, Chen, Bing, Geng, Jianpei, He, Xiaoxiong, Wang, Ya, Du, Jiangfeng
Format: Article
Language:English
Subjects:
Computer memory
Diamonds
Lasers
Nitrogen
Polarization
Quantum computing
Quantum phenomena
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Nuclear spins nearby nitrogen-vacancy (NV) centers in diamond are excellent quantum memory for quantum computing and quantum sensing, but are difficult to be initialized due to their weak interactions with the environment. Here we propose and demonstrate a magnetic-field-independent, deterministic and highly efficient polarization scheme by introducing chopped laser pulses into the double-resonance initialization method. With this method, we demonstrate initialization of single-nuclear-spin approaching \(98.1\%\) and a \(^{14}N\)-\(^{13}C\) double-nuclear-spin system approaching \(96.8\%\) at room temperature. The initialization is limited by a nuclear-spin depolarization effect due to chopped laser excitation. Our approach could be extended to NV systems with more nuclear spins and would be a useful tool in future applications such as nano-MRI and single-cell NMR.
ISSN:2331-8422
DOI:10.48550/arxiv.1806.05881