抄録
The quantum superposition principle states that an entity can exist in two different states simultaneously, counter to our 'classical' intuition. Is it possible to understand a given system's behaviour without such a concept? A test designed by Leggett and Garg can rule out this possibility. The test, originally intended for macroscopic objects, has been implemented in various systems. However to date no experiment has employed the 'ideal negative result' measurements that are required for the most robust test. Here we introduce a general protocol for these special measurements using an ancillary system, which acts as a local measuring device but which need not be perfectly prepared. We report an experimental realization using spin-bearing phosphorus impurities in silicon. The results demonstrate the necessity of a non-classical picture for this class of microscopic system. Our procedure can be applied to systems of any size, whether individually controlled or in a spatial ensemble.
本文言語 | English |
---|---|
論文番号 | 606 |
ジャーナル | Nature communications |
巻 | 3 |
DOI | |
出版ステータス | Published - 2012 |
ASJC Scopus subject areas
- 化学 (全般)
- 生化学、遺伝学、分子生物学(全般)
- 物理学および天文学(全般)