研究・研究者
研究会・セミナー
| 演 題 | 「Foundation of quantum mechanics explored with neutrons －new uncertainty-relation and Quantum Cheshire-Cat－」 |
|---|---|
| 日 時 | 2015年02月16日(月) 16:00 より 17:30 まで |
| 講演者 | 長谷川 祐司 （ウィーン工科大学 准教授） |
| 場 所 | 分子科学研究所 研究棟2階 201セミナー室 |
| 概 要 |
Quantum mechanics predicts that particles like neutrons can exhibit non-local wave properties in certain circumstances. The neutron interferometer with a monolithic structure of a silicon perfect crystal is invented in 1974 and is used for a variety of experiments studying foundation of quantum mechanics with matter-waves. Our group in Vienna is promoting neutron optical experiments, i.e., neutron interferometery and polarimetry: both experiments manifest the validity of quantum mechanical predictions with high precision. Recently, an experiment is carried out, which deals with error-disturbance uncertainty relation: we have experimentally tested error-disturbance uncertainty relations. Experimental results confirm the fact that the Heisenberg's uncertainty relation is often violated and that the new relation derived by Ozawa is always larger than the limit. In addition, as an example of a counterfactual phenomenon of quantum mechanics, observation of so-called quantum Cheshire Cat is performed experimentally by using neutron interferometer. Experimental results suggest that pre- and post-selected neutrons travel through one of the arms of the interferometer while their magnetic moment is located in the other arm. I am going to explain these two topics. |
| お問合せ先 | 鹿野 豊・大森賢治 |
