On the Heisenberg principle, namely on the information-disturbance trade-off in a quantum measurement

Details On the Heisenberg principle, namely on the information-disturbance trade-off in a quantum measurement On the Heisenberg principle, namely on the information-disturbance trade-off in a quantum measurement

2002-08-15

arxiv.org/abs/quant-ph/0208110v1

Physics

Quantum Physics

13 LeTeX pages, 2 figures, fortschritte.sty. To appear on Fortschritte der Physik. Presented at Quantum Interferometry IV, Tri

Scientific paper

Common misconceptions on the Heisenberg principle are reviewed, and the original spirit of the principle is reestablished in terms of the trade-off between information retrieved by a measurement and disturbance on the measured system. After analyzing the possibility of probabilistically reversible measurements, along with erasure of information and undoing of disturbance, general information-disturbance trade-offs are presented, where the disturbance of the measurement is related to the possibility in principle of undoing its effect.

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