This website requires JavaScript.

Extending the coherence time of spin defects in hBN enables advanced qubit control and quantum sensing

Roberto RizzatoMartin SchalkStephan Mohr ...+9 Dominik B. Bucher
Dec 2022
摘要
Spin defects in hexagonal Boron Nitride (hBN) attract increasing interest forquantum technology since they represent optically-addressable qubits in a vander Waals material. In particular, negatively-charged boron vacancy centers(${V_B}^-$) in hBN have shown promise as sensors of temperature, pressure, andstatic magnetic fields. However, the short spin coherence time of this defectcurrently limits its scope for quantum technology. Here, we apply dynamicaldecoupling techniques to suppress magnetic noise and extend the spin coherencetime by nearly two orders of magnitude, approaching the fundamental $T_1$relaxation limit. Based on this improvement, we demonstrate advanced spincontrol and a set of quantum sensing protocols to detect electromagneticsignals in the MHz range with sub-Hz resolution. This work lays the foundationfor nanoscale sensing using spin defects in an exfoliable material and opens apromising path to quantum sensors and quantum networks integrated intoultra-thin structures.
展开全部
图表提取

暂无人提供速读十问回答

论文十问由沈向洋博士提出,鼓励大家带着这十个问题去阅读论文,用有用的信息构建认知模型。写出自己的十问回答,还有机会在当前页面展示哦。

Q1论文试图解决什么问题?
Q2这是否是一个新的问题?
Q3这篇文章要验证一个什么科学假设?
0
被引用
笔记
问答