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Complete quantum measurements break entanglement
Tekijät: Pellonpaa JP
Kustantaja: ELSEVIER SCIENCE BV
Julkaisuvuosi: 2012
Journal: Physics Letters A
Tietokannassa oleva lehden nimi: PHYSICS LETTERS A
Lehden akronyymi: PHYS LETT A
Numero sarjassa: 46
Vuosikerta: 376
Numero: 46
Aloitussivu: 3495
Lopetussivu: 3498
Sivujen määrä: 4
ISSN: 0375-9601
DOI: https://doi.org/10.1016/j.physleta.2012.10.026
Rinnakkaistallenteen osoite: https://arxiv.org/abs/1206.6310
Tiivistelmä
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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