Short-lived Quantum Entanglement in Neutron Compton Scattering

该项目旨在研究量子力学中的一种新现象，即短寿命（出现在100-1000阿秒范围内）量子纠缠。测量这种现象的可能性随着一种新技术的出现而出现，即中子康普顿散射，由于其超短的散射时间。该技术是在独特的飞行时间光谱仪VESUVIO， ISIS设施，卢瑟福阿普尔顿实验室，英国实施。VESUVIO上的测量已经证明了一个惊人的效应——在各种材料中质子的总散射截面出现了“异常”的不足。目的是通过在ISIS进行为期两年的研究，扩大我在柏林工业大学（TUB）进行的研究范围，长期目标是在TUB“康复”。该项目将由ISIS的Jerry Mayers博士监督，他在该领域的经验将对项目的实现起到至关重要的作用。它将有两个主要目标；(1)发展了中子康普顿散射数据处理和实验建模的新方法，特别强调了一种新的实验技术-恒定动量传递测量的实现；(2)研究了电子环境和被击中粒子的动量分布在总散射截面“异常”不足中的作用。一系列的测量将被执行，理论分析将尝试一族化合物，其中电子结构以系统的方式变化。

The project aims at the investigation of a novel phenomenon in quantum mechanics, i. e. short-lived (appearing in the range of 100-1000 attoseconds) quantum entanglement. The possibility to measure this phenomenon emerged with the onset of a new technique, i. e. neutron Compton scattering, thanks to its ultra short scattering times. The technique is implemented at the unique time of flight spectrometer VESUVIO, ISIS facility, the Rutherford Appleton Laboratory, UK. Measurements on VESUVIO have demonstrated a striking effect – an “anomalous” shortfall of the total scattering cross section from protons in a variety of materials. The intention is to extend the scope of my research, conducted so far at the Technical University of Berlin (TUB), through a two-year research period at ISIS, with long-term objective being "Habilitation" at the TUB. The project will be supervised by Dr. Jerry Mayers of ISIS whose experience in the field will play crucial role its realization. It will have two major objectives; (1) development of new methods of data treatment and experiment modelling in Neutron Compton scattering with particular emphasis on the implementation of a new experimental technique - a constant momentum transfer measurement (2) the investigation of the role of electronic environment and momentum distribution of the struck particles in “anomalous” shortfall of total scattering cross section. A series of measurements will be performed and a theoretical analysis will be attempted on a family of compounds where the electronic structure changes in a systematic way.