科研之友
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摘要
Uncertainty relation lies at the heart of quantum mechanics, characterizing the incompatibility of non-commuting observables in the preparation of quantum states. An important question is how to improve the lower bound of uncertainty relation. Here we present a variance-based sum uncertainty relation for N incompatible observables stronger than the simple generalization of an existing uncertainty relation for two observables. Further comparisons of our uncertainty relation with other related ones for spin-1/2 and spin-1 particles indicate that the obtained uncertainty relation gives a better lower bound.
- 出版日期2017-3-20
- 单位中国科学院大学
