Taming the Delayed Choice Quantum Eraser
作者: Johannes Fankhauser
作者单位: 1University of Oxford
刊名: Quanta, 2019, Vol.8 (1), pp.44-56
来源数据库: Quanta
DOI: 10.12743/quanta.v8i1.88
原始语种摘要: I discuss the delayed choice quantum eraser experiment by drawing an analogy to a Bell-type measurement and giving a straightforward account in standard quantum mechanics. The delayed choice quantum eraser experiment turns out to resemble a Bell-type scenario in which the resolution of the paradox is rather trivial, and so there really is no mystery. At first glance, the experiment suggests that measurements on one part of an entangled photon pair (the idler) can be employed to control whether the measurement outcome of the other part of the photon pair (the signal) produces interference fringes at a screen after being sent through a double slit. Significantly, the choice whether there is interference or not can be made long after the signal photon encounters the screen. The results of...
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  • backwards 往回
  • choice 选择
  • instant 瞬间
  • discuss 议论
  • experiment 实验
  • paradox 悖论
  • Choice 上级
  • there 那里
  • issue 
  • turns 捻数