内容：

Quantum sensing refers to the use of quantum systems, quantum properties, or quantum phenomena to achieve highly sensitive detection of physical quantities. Among the many physical systems, the nitrogen vacancy center (NV center) in diamond has attracted much attention in recent years. It has unique spin and optical properties that enable sensitive measurements of magnetic fields, temperature, pressure and other parameters on the nanoscale. In addition, the exceptional mechanical and optical properties of diamond allow this approach to work under a variety of environmental and even extreme conditions, e.g. ultra- low (300 mK) or high (1000 K) temperatures, strong magnetic fields (~8.3 T) and high pressure (~140 GPa). This provides a unique tool for frontier studies in condensed matter physics, materials science and geoscience. In this talk, I will present the basic of NV-based quantum sensing and recent experimental results. The focus will be on quantum control and quantum sensing under high pressure.

人物介绍：

Gang-Qin Liu is currently a professor at the Institute of Physics, Chinese Academy of Sciences (IOP, CAS). He earned his B.S. (2009) and Ph.D. (2014) from Beijing Normal University (BNU) and Institute of Physics, respectively. He then did postdoctoral research at Chinese University of Hong Kong (CUHK, 2014-2018). He joined the quantum lab of IOP in 2018 and founded the quantum sensing group (Q04) in 2020. Gang-Qin Liu’s primary research interest is quantum control and quantum information processing with color centers in solids. Recently, his work has focused on quantum sensing for condensed matter physics.