期刊
PHYSICS LETTERS A
卷 380, 期 37, 页码 2925-2930出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physleta.2016.06.054
关键词
Uncertainty relations; Incompatible observables; Variances
资金
- Ministry of Science and Technology of the People's Republic of China [2015CB856703]
- National Natural Science Foundation of China (NSFC) [11175249, 11375200]
Uncertainty relation is one of the fundamental building blocks of quantum theory. Nevertheless, the traditional uncertainty relations do not fully capture the concept of incompatible observables. Here we present a stronger Schrodinger-like uncertainty relation, which is stronger than the relation recently derived by Maccone and Pati (2014) [11]. Furthermore, we give an additive uncertainty relation which holds for three incompatible observables, which is stronger than the relation newly obtained by Kechrimparis and Weigert (2014) [12] and the simple extension of the Schrodinger uncertainty relation. (C) 2016 Elsevier B.V. All rights reserved.
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