About: Coarse-grained quantum state estimation for noisy measurements

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We introduce a numerical coarse-graining scheme to reliably estimate the quantum state of a source given a set of noisy measurement outcomes that are not well calibrated. This scheme requires no additional knowledge or assumptions about the structures of the noisy outcomes and is, thus, applicable for very general tomography experiments with arbitrary noise perturbations. Further, this scheme involves an optimization procedure that is straightforward to implement and can readily be extended to any number of ill-calibrated noisy outcomes in a measurement setup. Compared with the standard estimation strategy where noise is neglected, coarse graining performed on simulated and experimental data for two-qubit quantum states and on simulated data from continuous-variable tomography shows that this scheme can significantly improve the accuracies of state estimators for noise levels ranging from low to moderately high values. We introduce a numerical coarse-graining scheme to reliably estimate the quantum state of a source given a set of noisy measurement outcomes that are not well calibrated. This scheme requires no additional knowledge or assumptions about the structures of the noisy outcomes and is, thus, applicable for very general tomography experiments with arbitrary noise perturbations. Further, this scheme involves an optimization procedure that is straightforward to implement and can readily be extended to any number of ill-calibrated noisy outcomes in a measurement setup. Compared with the standard estimation strategy where noise is neglected, coarse graining performed on simulated and experimental data for two-qubit quantum states and on simulated data from continuous-variable tomography shows that this scheme can significantly improve the accuracies of state estimators for noise levels ranging from low to moderately high values. (en)
Title	Coarse-grained quantum state estimation for noisy measurements Coarse-grained quantum state estimation for noisy measurements (en)
skos:prefLabel	Coarse-grained quantum state estimation for noisy measurements Coarse-grained quantum state estimation for noisy measurements (en)
skos:notation	RIV/61989592:15310/13:33144341!RIV14-TA0-15310___
http://linked.open...avai/predkladatel	Přírodovědecká fakulta
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(EE2.3.30.0004), P(TE01020229)
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Řeháček, Jaroslav Hradil, Zdeněk Teo, Yong Siah
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Palackého v Olomouci / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	65859
http://linked.open...ai/riv/idVysledku	RIV/61989592:15310/13:33144341
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	detectors; information; twin beams; weighted entropy; Pattern-recognition (en)
http://linked.open.../riv/klicoveSlovo	detectors information Pattern-recognition twin beams weighted entropy
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[76994EFDBFA9]
http://linked.open...i/riv/nazevZdroje	Physical Review A
http://linked.open...in/vavai/riv/obor	BH
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Center of digital optics POST-UP
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	88
http://linked.open...iv/tvurceVysledku	Hradil, Zdeněk Teo, Yong Siah Řeháček, Jaroslav
http://linked.open...ain/vavai/riv/wos	000323152700002
issn	1050-2947
number of pages	8 (xsd:int)
http://bibframe.org/vocab/doi	10.1103/PhysRevA.88.022111
http://localhost/t...ganizacniJednotka	15310

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