Accession Number:

AD0603719

Title:

MEASUREMENT OF A QUANTUM ENSEMBLE BY A CLASSICAL APPARATUS.

Descriptive Note:

Scientific rept.

Corporate Author:

TECHNION - ISRAEL INST OF TECH HAIFA

Personal Author(s):

Report Date:

1964-02-02

Pagination or Media Count:

20.0

Abstract:

A simple model of an ensemble of quantum systems interacting with a classical test body is described, the test body serving to measure the expectation value of dynamical variable of the quantum systems. An expression is derived for the minimum interaction needed to perform the measurement, and it is shown that an interaction which is strong enough to determine an expectation value will transform a pure-state ensemble into a mixture. The model can be generalized to the case in which the expectation values of several variables are measured. Finally, the test body is described by means of quantum mechanics and its most probable behavior is found to be that corresponding to the previous classical description. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE