报告时间：2017年12月19日15:00-16:00
报告地点：近代物理系210会议室
报告人：Abhishek Shukla（宋安宝）副研究员 （中国科学技术大学）
报告题目：Magnetic resonance based quantum information processing: Nuclear magnetic resonance (NMR) to optically detected magnetic resonance (ODMR).
报告摘要：While bit is a fundamental unit of classical information qubit is a fundamental unit of quantum information. Processing quantum information requires any physical architecture satisfying Divincenzo's criteria. Magnetic resonance based techniques as NMR and ODMR fulfills Divincenzo's criteria and thus can be used as quantum information processor. I will present various quantum information processing (QIP) tasks that I have designed and implemented them experimentally using NMR. In particular, I will talk about advances in various quantum measurement techniques such as state and process tomography, non-invasive measurement, Luders and Von-Neumann measurement. These advances play a vital role in improving various QIP experiments. NMR can also be used as testbed for studying behavior of quantum systems and simulating other quantum systems. I will present experimental studies for quantum simulation and testing dual nature of nuclear spins. Furthermore, I will show applications of QIP techniques in spectroscopy. Although NMR is a good technique for quantum information processing, but has its own limitations, namely scalability and ensemble nature. On the other hand, nitrogen vacancy centers in diamond due to its own virtues like easy initialization, manipulation and detection at room temperature emerging as a good candidate for QIP. I will talk about my proposal for realizing small scale quantum register, involving NV center electron spin and 13C nuclear spins surrounding it  . This can be considered as the primary step in realizing scalable hybrid quantum register using ODMR technique.