Physics – Quantum Physics
Scientific paper
2002-09-15
Int. J. Theor. Phys. 42 (2003) 937-941
Physics
Quantum Physics
5 pages, LaTex. Some typos eliminated, readibility of proofs enhanced. New topological observation added
Scientific paper
10.1023/A:1025462220957
The significance of the quantum feature of entanglement between physical systems is investigated in the context of quantum measurements. It is shown that, while there are measurement couplings that leave the object and probe systems non-entangled, no information transfer from object to probe can take place unless there is there is at least some intermittent period where the two systems are entangled. PACS numbers: 03.65.Ca; 03.65.Ta; 03.65.Wj; 03.65.Ud.
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