Experimental joint quantum measurements with minimum uncertainty

Autor:	Matthew A. Broome, Andrew White, Martin Ringbauer, D. N. Biggerstaff, Cyril Branciard, Alessandro Fedrizzi
Rok vydání:	2013
Předmět:	Physics Theoretical physics Photon Measurement theory Quantum state General Physics and Astronomy Measurement uncertainty Observable Quantum information Quantum Joint (geology)
Zdroj:	Physical review letters. 112(2)
ISSN:	1079-7114
Popis:	Quantum physics constrains the accuracy of joint measurements of incompatible observables. Here we test tight measurement-uncertainty relations using single photons. We implement two independent, idealized uncertainty-estimation methods, the three-state method and the weak-measurement method, and adapt them to realistic experimental conditions. Exceptional quantum state fidelities of up to 0.999 98(6) allow us to verge upon the fundamental limits of measurement uncertainty.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2776c2df85433fbf634d753ecf3eec1f https://pubmed.ncbi.nlm.nih.gov/24483993 Zobrazit plný text záznamu