Quantum Mechanics of Measurement

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dc.creatorCerf, N. J.
dc.creatorAdami, C.
dc.date1996-05-03
dc.date1997-02-12
dc.date.accessioned2026-07-07T09:08:54Z
dc.date.available2026-07-07T09:08:54Z
dc.descriptionAn analysis of quantum measurement is presented that relies on an information-theoretic description of quantum entanglement. In a consistent quantum information theory of entanglement, entropies (uncertainties) conditional on measurement outcomes can be negative, implying that measurement can be described via unitary, entropy-conserving, interactions, while still producing randomness in a measurement device. In such a framework, quantum measurement is not accompanied by a wave-function collapse, or a quantum jump. The theory is applied to the measurement of incompatible variables, giving rise to a stronger entropic uncertainty relation than heretofore known. It is also applied to standard quantum measurement situations such as the Stern-Gerlach and double-slit experiments to illustrate how randomness, inherent in the conventional quantum probabilities, arises in a unitary framework. Finally, the present view clarifies the relationship between classical and quantum concepts.
dc.description18 pages RevTex incl. 8 figures, submitted to Phys. Rev. A. Revised abstract and introduction. Added discussion on separability and entropic uncertainty relations
dc.identifierhttps://arxiv.org/abs/quant-ph/9605002
dc.identifierhttp://arxiv.org/abs/quant-ph/9605002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/150886
dc.subjectQuantum Physics
dc.titleQuantum Mechanics of Measurement
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