# A self-interfering clock as a “which path” witness

> Research article (Science, 2015) · cited 91× · AI/ML

**Wikidata**: [openalex:W2104967016](https://www.wikidata.org/wiki/openalex:W2104967016)  
**Source**: https://4ort.xyz/entity/a-self-interfering-clock-as-a-which-path-witness