A1 Refereed original research article in a scientific journal
Complete quantum measurements break entanglement
Authors: Pellonpaa JP
Publisher: ELSEVIER SCIENCE BV
Publication year: 2012
Journal: Physics Letters A
Journal name in source: PHYSICS LETTERS A
Journal acronym: PHYS LETT A
Number in series: 46
Volume: 376
Issue: 46
First page : 3495
Last page: 3498
Number of pages: 4
ISSN: 0375-9601
DOI: https://doi.org/10.1016/j.physleta.2012.10.026
Self-archived copy’s web address: https://arxiv.org/abs/1206.6310
Abstract
A complete measurement of a quantum observable (POVM) is a measurement of the maximally refined version of the POVM. Complete measurements give information on multiplicities of measurement outcomes and can be used as state preparation procedures. Moreover, any observable can be measured completely. In this Letter, we show that a complete measurement breaks entanglement completely between the system, ancilla and their environment. Finally, consequences for the quantum Zeno effect and complete position measurements are discussed. (C) 2012 Elsevier B.V. All rights reserved.
A complete measurement of a quantum observable (POVM) is a measurement of the maximally refined version of the POVM. Complete measurements give information on multiplicities of measurement outcomes and can be used as state preparation procedures. Moreover, any observable can be measured completely. In this Letter, we show that a complete measurement breaks entanglement completely between the system, ancilla and their environment. Finally, consequences for the quantum Zeno effect and complete position measurements are discussed. (C) 2012 Elsevier B.V. All rights reserved.
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