Please use this identifier to cite or link to this item: https://doi.org/10/105020
Title: Verification of state and entanglement with incomplete tomography
Authors: Teo, Y.S.
Englert, B.-G. 
Řeháček, J.
Hradil, Z.
Mogilevtsev, D.
Issue Date: Oct-2012
Source: Teo, Y.S.,Englert, B.-G.,Řeháček, J.,Hradil, Z.,Mogilevtsev, D. (2012-10). Verification of state and entanglement with incomplete tomography. New Journal of Physics 14 : -. ScholarBank@NUS Repository. https://doi.org/10/105020
Abstract: There exists, in general, a convex set of quantum state estimators that maximize the likelihood for informationally incomplete data. We propose an estimation scheme, catered to measurement data of this kind, to search for the exact maximum-likelihood-maximum-entropy estimator using semidefinite programming and a standard multi-dimensional function optimization routine. This scheme can be used to infer the expectation values of a set of entanglement witnesses that can be used to verify the entanglement of the unknown quantum state for composite systems. Next, we establish an alternative numerical scheme that is more computationally robust for the sole purpose of maximizing the likelihood and entropy. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
Source Title: New Journal of Physics
URI: http://scholarbank.nus.edu.sg/handle/10635/98554
ISSN: 13672630
DOI: 10/105020
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

22
checked on Feb 17, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.