• Uncertainty relation for successive measurements

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      https://www.ias.ac.in/article/fulltext/pram/012/06/0699-0705

    • Keywords

       

      Uncertainty relations; collapse postulate; successive measurements; quantum interference of probabilities

    • Abstract

       

      It is noted that the Heisenberg uncertainty relations set a lower bound on the product of variances of two observablesA, B when they are separately measured on two distinct, but identically prepared ensembles. A new uncertainty relation is derived for the product of the variances of the two observablesA, B when they are measured sequentially on a single ensemble of systems. It is shown that the two uncertainty relations differ significantly wheneverA andB are not compatible.

    • Author Affiliations

       

      B Gnanapragasam1 M D Srinivas1 2

      1. Department of Physics, Madras Medical College, Madras - 600 003
      2. Department of Theoretical Physics, University of Madras, Madras - 600 025
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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