基于室温单自旋磁共振技术的量子精密测量

实现深及单个量子系统的测量技术,能够揭示出在传统宏观测量中被系综统计所平均掉的独特的个体信息.金刚石中的氮–空位色心(NV色心)在室温下具有超长的相干时间,并可以通过光探测磁共振的方式进行单量子体系的操控和读出,已经成为实现量子精密测量和量子信息处理的重要平台.尤其在测磁学方面,朝向单分子成像的研究正在全力进行.本文回顾了基于NV色心的量子精密测量研究,介绍了其在测量磁场、电场、力学系统、温度等方面的相关进展,讨论了本领域今后可能的发展方向.

Quantum precision metrology based on single-spin magnetic resonance

The ability of penetrating deeply into single quantum system can help reveal the unique information of the quantum individuals used to be averaged by the ensemble statistics in traditional macroscopic measurement. The nitrogen-vacancy （NV） center in diamond, which has an ultralong coherence time and can be readout and manipulated through ODMR （optically detected magnetic resonance） techniques under room temperature, has been an important platform achieving quantum precision measurement and quantum information processing. Particularly in magnetometry, the researches on single spin imaging are in full swing. In this review we retrospect the work about quantum precision metrology based on the NV center, and introduce the progress in sensing magnetic field, electric field, mechanical system and temperature. We also discuss the possible developing directions in this area.