Unconditional Pointer States from Conditional Master Equations

Details Unconditional Pointer States from Conditional Master Equations Unconditional Pointer States from Conditional Master Equations

2000-06-21

arxiv.org/abs/quant-ph/0006098v3

Phys.Rev.Lett. 86, 373 (2001)

Physics

Quantum Physics

4 pages, 3 .eps figures; final version to appear in Phys.Rev.Lett

Scientific paper

10.1103/PhysRevLett.86.373

When part of the environment responsible for decoherence is used to extract information about the decohering system, the preferred {\it pointer states} remain unchanged. This conclusion -- reached for a specific class of models -- is investigated in a general setting of conditional master equations using suitable generalizations of predictability sieve. We also find indications that the einselected states are easiest to infer from the measurements carried out on the environment.

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