Delayed choice, complementarity, entanglement and measurement
作者: HervéZwirn
刊名: Physics Essays, 2017, Vol.30 (3), pp.281-293
来源数据库: Physics Essays
DOI: 10.4006/0836-1398-30.3.281
原始语种摘要: It is well known that Wheeler proposed several delayed choice experiments in order to show the impossibility to speak of the way a quantum system behaves before being detected. In a double-slit experiment, when do photons decide to travel by one way or by two ways? Delayed choice experiments seem to indicate that, strangely, it is possible to change the “decision” of the photons until the very last moment before they are detected. This led Wheeler to his famous sentence: “No elementary quantum phenomenon is a phenomenon until it is a registered phenomenon, brought to a close by an irreversible act of amplification.” Nevertheless, some authors wrote that backward in time effects were needed to explain these results. I will show that in delayed choice experiments involving only one...
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关键词翻译
关键词翻译
  • choice 选择
  • impossibility 不可能
  • irreversible 不可逆的
  • explanation 说明
  • measurement 测量
  • decision 决定
  • backward 向后
  • clarifying 澄清的
  • entanglement 扭结
  • problem 题目