• Uncertainty relation for successive measurements

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    • 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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