新科学想法 › 学术文库 › 学术文献 › 浏览文献

One-second coherence for a single electron spin coupled to a multi-qubit nuclear-spin environment

zqyin 添加于 2018-5-23 16:41 | 910 次阅读 | 0 个评论

作者
Abobeih MH, Cramer J, Bakker MA, Kalb N, Twitchen DJ, Markham M, Taminiau TH
摘要
Single electron spins coupled to multiple nuclear spins provide promising multi-qubit registers for quantum sensing and quantum networks. The obtainable level of control is determined by how well the electron spin can be selectively coupled to, and decoupled from, the surrounding nuclear spins. Here we realize a coherence time exceeding a second for a single electron spin through decoupling sequences tailored to its microscopic nuclear-spin environment. We first use the electron spin to probe the environment, which is accurately described by seven individual and six pairs of coupled carbon-13 spins. We develop initialization, control and readout of the carbon-13 pairs in order to directly reveal their atomic structure. We then exploit this knowledge to store quantum states for over a second by carefully avoiding unwanted interactions. These results provide a proof-of-principle for quantum sensing of complex multi-spin systems and an opportunity for multi-qubit quantum registers with long coherence times.
详细资料
- 关键词: quant-ph
- 文献种类: Manual Script
- 期卷页: 2018年
- 日期: 2018-1-4
- 发布方式: arXiv e-prints
- 备注:http://arxiv.org/abs/1801.01196v1
相关链接 URL
zqyin 的文献笔记订阅