Change search
ReferencesLink to record
Permanent link

Direct link
Experimental Test of the State Estimation-Reversal Tradeoff Relation in General Quantum Measurements
Show others and affiliations
2014 (English)In: Physical Review X, ISSN 2160-3308, Vol. 4, no 5, 021043- p.Article in journal (Refereed) Published
Abstract [en]

When a measurement has limited strength, only partial information, regarding the initial state, is extracted, and, correspondingly, there is a probability to reverse its effect on the system and retrieve the original state. Recently, a clear and direct quantitative description of this complementary relationship, in terms of a tradeoff relation, was developed by Y. K. Cheong and S. W. Lee. [Phys. Rev. Lett. 109, 150402 (2012)]. Here, this tradeoff relation is experimentally verified using polarization-encoded single photons from a quantum dot. Measurement operators representing a complete range, from not affecting the system to a projection to a single polarization state, are realized. In addition, for each measurement operator, an optimal reversal operator is also implemented. The upper bound of the tradeoff relation is mapped to experimental parameters representing the measurement strength. Our results complement the theoretical work and provide a hands-on characterization of general quantum measurements.

Place, publisher, year, edition, pages
2014. Vol. 4, no 5, 021043- p.
National Category
Physical Sciences
URN: urn:nbn:se:su:diva-105889DOI: 10.1103/PhysRevX.4.021043ISI: 000336914200001OAI: diva2:733414
EU, European Research Council, 321031


Available from: 2014-07-09 Created: 2014-07-08 Last updated: 2014-07-09Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text
By organisation
Nordic Institute for Theoretical Physics (Nordita)
In the same journal
Physical Review X
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 37 hits
ReferencesLink to record
Permanent link

Direct link