Thermal-difference states of light: true ...
Document type :
Autre communication scientifique (congrès sans actes - poster - séminaire...): Communication dans un congrès avec actes
Title :
Thermal-difference states of light: true states of heralded photons
Author(s) :
Horoshko, Dmitri [Auteur]
De Bievre, Stephan [Auteur]
Patera, Giuseppe [Auteur]
Kolobov, Mikhail [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
De Bievre, Stephan [Auteur]
Patera, Giuseppe [Auteur]
Kolobov, Mikhail [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Conference title :
QUANTUM TECHNOLOGY INTERNATIONAL CONFERENCE 2018 (QTECH 2018)
City :
Paris
Country :
France
Start date of the conference :
2018
Publication date :
2019
HAL domain(s) :
Physique [physics]/Physique Quantique [quant-ph]
English abstract : [en]
We introduce a three-parameter family of single-mode optical states whose density operator is a weighted difference of two thermal states, the thermal-difference states. We identify the parameter values for which these ...
Show more >We introduce a three-parameter family of single-mode optical states whose density operator is a weighted difference of two thermal states, the thermal-difference states. We identify the parameter values for which these states have a negative non-singular P-function, implying they are nonclassical. We show that the states of the ``heralded photons'' generated via spontaneous parametric down conversion belong to this family, with the three parameters corresponding to the nonlinear gain and the losses in the signal and the idler channels. The thermal-difference states yield new benchmark states for the analysis of nonclassicality and quantum macroscopicity criteria.Show less >
Show more >We introduce a three-parameter family of single-mode optical states whose density operator is a weighted difference of two thermal states, the thermal-difference states. We identify the parameter values for which these states have a negative non-singular P-function, implying they are nonclassical. We show that the states of the ``heralded photons'' generated via spontaneous parametric down conversion belong to this family, with the three parameters corresponding to the nonlinear gain and the losses in the signal and the idler channels. The thermal-difference states yield new benchmark states for the analysis of nonclassicality and quantum macroscopicity criteria.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
Comment :
Quantum Technology International Conference (QTech), Ecole Normale Superieure Ulm, Paris, FRANCE, SEP 05-07, 2018
Source :
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