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Open Quantum Systems Decoherence

Complete measurements of quantum observables

arXiv

Authors: Juha-Pekka Pellonpää

Year

2012

Paper ID

8652

Status

Preprint

Abstract Read

~2 min

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Abstract

We define a complete measurement of a quantum observable (POVM) as a measurement of the maximally refined version of the POVM. Complete measurements give information from the multiplicities of the measurement outcomes and can be viewed as state preparation procedures. We show that any POVM can be measured completely by using sequential measurements or maximally refinable instruments. Moreover, the ancillary space of a complete measurement can be chosen to be minimal.

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This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
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We define a complete measurement of a quantum observable (POVM) as a measurement of the maximally refined version of the POVM.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1206.2506 [2] arXiv https://arxiv.org/abs/1206.2506 [3] Publisher https://arxiv.org/abs/1206.2506

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