Theoretical Setting of Inner Reversible Quantum Measurements

Details Theoretical Setting of Inner Reversible Quantum Measurements Theoretical Setting of Inner Reversible Quantum Measurements

2005-07-16

arxiv.org/abs/quant-ph/0507155v2

Mod. Phys. Lett. A, Vol.21, No. 36 (2006) pp. 2717-2727

Physics

Quantum Physics

11 pages. More concise, shortened version for submission to journal. References added

Scientific paper

10.1142/S0217732306021827

We show that any unitary transformation performed on the quantum state of a closed quantum system, describes an inner, reversible, generalized quantum measurement. We also show that under some specific conditions it is possible to perform a unitary transformation on the state of the closed quantum system by means of a collection of generalized measurement operators. In particular, given a complete set of orthogonal projectors, it is possible to implement a reversible quantum measurement that preserves the probabilities. In this context, we introduce the concept of "Truth-Observable", which is the physical counterpart of an inner logical truth.

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