Issue |
EPL
Volume 116, Number 1, October 2016
|
|
---|---|---|
Article Number | 10002 | |
Number of page(s) | 5 | |
Section | General | |
DOI | https://doi.org/10.1209/0295-5075/116/10002 | |
Published online | 11 November 2016 |
Error estimation in the direct state tomography
Departamento de Física, Universidad de Guadalajara - Revolución 1500, 44420 Guadalajara, Jal., México
Received: 27 July 2016
Accepted: 19 October 2016
We show that reformulating the Direct State Tomography (DST) protocol in terms of projections into a set of non-orthogonal bases one can perform an accuracy analysis of DST in a similar way as in the standard projection-based reconstruction schemes, i.e., in terms of the Hilbert-Schmidt distance between estimated and true states. This allows us to determine the estimation error for any measurement strength, including the weak measurement case, and to obtain an explicit analytic form for the average minimum square errors.
PACS: 03.65.Wj – State reconstruction, quantum tomography / 03.65.Ta – Foundations of quantum mechanics; measurement theory
© EPLA, 2016
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.