Experimental Test of Residual Error-Disturbance Uncertainty Relations for Mixed Spin-½ States

The indeterminacy inherent in quantum measurements is an outstanding character of quantum theory, which manifests itself typically in the uncertainty principle. In the last decade, several universally valid forms of error-disturbance uncertainty relations were derived for completely general quantum...

Full description

Bibliographic Details
Published in:Physical review letters, Vol. 117, No. 14 (2016), p. 140402
Main Author: Demirel, Bülent (Author)
Other Involved Persons: Sponar, Stephan ; Sulyok, Georg ; Ozawa, Masanao ; Hasegawa, Yuji
Format: electronic Article
Language:English
ISSN:1079-7114
Item Description:Date Completed 26.01.2018
Date Revised 26.01.2018
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
Copyright: From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Physical Description:Online-Ressource
Subjects:
QR Code: Show QR Code
LEADER 02267nma a2200373 c 4500
001 NLM265366909
003 DE-601
005 20181229165011.0
007 cr uuu---uuuuu
008 180206s2016 000 0 eng d
028 5 2 |a pubmed19n0884.xml 
035 |a (DE-599)NLM27740786 
040 |b ger  |c GBVCP 
041 0 |a eng 
100 1 |a Demirel, Bülent  |e verfasserin  |4 aut 
245 1 0 |a Experimental Test of Residual Error-Disturbance Uncertainty Relations for Mixed Spin-½ States  |h Elektronische Ressource 
300 |a Online-Ressource 
500 |a Date Completed 26.01.2018 
500 |a Date Revised 26.01.2018 
500 |a published: Print-Electronic 
500 |a Citation Status PubMed-not-MEDLINE 
500 |a Copyright: From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine 
520 |a The indeterminacy inherent in quantum measurements is an outstanding character of quantum theory, which manifests itself typically in the uncertainty principle. In the last decade, several universally valid forms of error-disturbance uncertainty relations were derived for completely general quantum measurements for arbitrary states. Subsequently, Branciard established a form that is optimal for spin measurements for some pure states. However, the bound in his inequality is not stringent for mixed states. One of the present authors recently derived a new bound tight in the corresponding mixed state case. Here, a neutron-optical experiment is carried out to investigate this new relation: it is tested whether error and disturbance of quantum measurements disappear or persist in mixing up the measured ensemble. The attainability of the new bound is experimentally observed, falsifying the tightness of Branciard's bound for mixed spin states 
611 2 7 |a Journal Article  |2 gnd 
689 0 0 |A f  |a Journal Article 
689 0 |5 DE-601 
700 1 |a Sponar, Stephan  |e verfasserin  |4 aut 
700 1 |a Sulyok, Georg  |e verfasserin  |4 aut 
700 1 |a Ozawa, Masanao  |e verfasserin  |4 aut 
700 1 |a Hasegawa, Yuji  |e verfasserin  |4 aut 
773 0 8 |i in  |t Physical review letters  |g Vol. 117, No. 14 (2016), p. 140402  |q 117:14<140402  |w (DE-601)NLM099658917  |x 1079-7114 
912 |a GBV_NLM 
951 |a AR 
952 |d 117  |j 2016  |e 14  |c 09  |h 140402