PIRSA:10030061 Scientific Series Quantum Foundations

DOI10.48660/10030061

Series: Quantum Foundations

Vaidman, L. (2010). Where is the quantum particle between two measurements. Perimeter Institute. https://pirsa.org/10030061

Vaidman, Lev. Where is the quantum particle between two measurements. Perimeter Institute, Mar. 16, 2010, https://pirsa.org/10030061 

@misc{ pirsa_PIRSA:10030061,
  doi = {10.48660/10030061},
  url = {https://pirsa.org/10030061},
  author = {Vaidman, Lev},
  keywords = {Quantum Foundations},
  language = {en},
  title = {Where is the quantum particle between two measurements},
  publisher = {Perimeter Institute},
  year = {2010},
  month = {mar},
  note = {PIRSA:10030061 see, \url{https://pirsa.org}}
}

Abstract

The Wheeler delayed choice experiment, Elitzur-Vaidman interaction-free measurement, and Hosten-Kwiat counterfactual computation will be discussed to answer Bohr's forbidden question: "Where is a quantum particle while it is inside a Mach-Zehnder Interferometer?". I will argue that the naive application of Wheeler's approach fails to explain a weak trace left by the particle and that the two-state vector description is required.

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