首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Quantum coherence and decoherence of protons and muons in condensed matter
Authors:EB Karlsson
Institution:(1) Department of Physics, Uppsala University, P.O. Box 530, 75121 Uppsala, Sweden, SE
Abstract:The coherence in quantum superposition states of protons (and chemically similar particles, the positive muons) has been studied in some condensed matter environments. It is shown that if the proton systems and the experimental techniques used to study them are carefully selected, it is possible to observe quantum delocalization states of single particles and to understand the mechanisms for their loss of coherence. Quantum correlated two- and multiparticle states of protons lose coherence very fast when coupled to condensed matter environments, but new sub-femtosecond techniques have made them accessible to experimental studies. The degree of decoherence can be measured as function of time and the decoherence mechanisms can, at least in certain cases, be identified. Although less clean than in corresponding studies of quantum optical systems, these studies can be seen as a first step towards understanding the conditions for preservation of quantum correlation and entanglement in massive systems. Some consequences and some suggestions for future work are discussed. Received 28 August 2002 Published online 7 January 2003
Keywords:PACS  03  65  -w Quantum mechanics –  61  12  -q Neutron diffraction and scattering
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号