RT Journal Article
T1 Extracting the physical sector of quantum states
A1 Mogilevtsev, D.
A1 Teo, Y.S.
A1 Řeháček, Jaroslav
A1 Hradil, Zdenek
A1 Tiedau, J.
A1 Kruse, R.
A1 Harder, Georg
A1 Silberhorn, C.
A1 Sánchez Soto, Luis Lorenzo
AB The physical nature of any quantum source guarantees the existence of an effective Hilbert space of finite dimension, the physical sector, in which its state is completely characterized with arbitrarily high accuracy. The extraction of this sector is essential for state tomography. We show that the physical sector of a state, defined in some pre-chosen basis, can be systematically retrieved with a procedure using only data collected from a set of commuting quantum measurement outcomes, with no other assumptions about the source. We demonstrate the versatility and efficiency of the physical-sector extraction by applying it to simulated and experimental data for quantum light sources, as well as quantum systems of finite dimensions.
PB IOP publishing ltd
SN 1367-2630
YR 2017
FD 2017-09-13
LK https://hdl.handle.net/20.500.14352/18251
UL https://hdl.handle.net/20.500.14352/18251
LA eng
NO ©2017 IOP Publishing Ltd.DM acknowledges support from the National Academy of Sciences of Belarus through the program 'Convergence', the European Commission through the SUPERTWIN project (Contract No. 686731), and by FAPESP (Grant No. 2014/ 21188-0). YST acknowledges support from the BK21 Plus Program (Grant 21A20131111123) funded by the Ministry of Education (MOE, Korea) and National Research Foundation of Korea (NRF) and the KIST Institutional Program ( Project No. 2E26680-16-P025). JR. andZHacknowledge support from the Grant Agency of the Czech Republic (Grant No. 15-03194S), and the IGA Project of Palacky University (Grant No. PRF 2016-005). JT, RK, GH, and ChS acknowledge the European Commission through the QCumber project (Contract No. 665148). Finally, LLSS acknowledges the SpanishMINECO (Grant FIS2015-67963-P).
NO Unión Europea. H2020
NO Ministerio de Economía y Competitividad (MINECO)
NO Grant Agency of the Czech Republic
NO IGA Project of Palacký University
NO European Commission through the QCumber project
DS Docta Complutense
RD 4 may 2024