A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Unified picture for spatial, temporal, and channel steering
Tekijät: Roope Uola, Fabiano Lever, Otfried Gühne, Juha-Pekka Pellonpää
Kustantaja: AMER PHYSICAL SOC
Julkaisuvuosi: 2018
Journal: Physical Review A
Tietokannassa oleva lehden nimi: PHYSICAL REVIEW A
Lehden akronyymi: PHYS REV A
Artikkelin numero: ARTN 032301
Vuosikerta: 97
Numero: 3
Sivujen määrä: 6
ISSN: 2469-9926
eISSN: 2469-9934
DOI: https://doi.org/10.1103/PhysRevA.97.032301
Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/30712923
Quantum steering describes how local actions on a quantum system can affect another, spacelike separated, quantum state. Lately, quantum steering has been formulated also for timelike scenarios and for quantum channels. We approach all the three scenarios as one using tools from Stinespring dilations of quantum channels. By applying our technique we link all three steering problems one-to-one with the incompatibility of quantum measurements, a result formerly known only for spatial steering. We exploit this connection by showing how measurement uncertainty relations can be used as tight steering inequalities for all three scenarios. Moreover, we show that certain notions of temporal and spatial steering are fully equivalent and prove a hierarchy between temporal steering and macrorealistic hidden variable models.
Ladattava julkaisu This is an electronic reprint of the original article. |  |
