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Degree of Entanglement and Violation of Bell Inequality by Two-Spin-1/2 States

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Communications in Theoretical Physics 2011年第10期56卷 679-686页

作者： k.Berrada Y.hassouni H.Eleuch Institut fr Angewandte Physik Technische Universitt DarmstadtD-64289 DarmstadtGermany Institute for Quantum Studies and Department of Physics Texas University TX 77843USA Laboratoire de Physique Theorique URAC 13 Departement de Physique Faculte des SciencesUniversite Mohammed V-Agdal Av.Ibn BattoutaB.P.1014-AgdalRabatMorocco

Bell inequality is violated by the quantum mechanical predictions made from an entangled state of the composite *** this paper we examine this inequality and entanglement measures in the construction of the coherent states for two-qubit pure and mixed states,we find a link to some entanglement measures through some new parameters(amplitudes of coherent states).Conditions for maximal entanglement and separability are then established for both pure and mixed ***,we analyze and compare the violation of Bell inequality for a class of mixed states with the degree of entanglement by applying the formalism of Horodecki et al.

关键词： Bell inequality quantum entanglement coherent states pure and mixed states

Exploring the impact of weak measurements on exciton-exciton interactions

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Communications in Theoretical Physics 2024年第11期76卷 42-47页

作者： Fatima-Zahra Siyouri Olivier Giraud Yassine hassouni Equipe Sciences de la Matiere et du Rayonnement(ESMaR) Departement de PhysiqueFaculte des SciencesUniversite Mohammed VAgdalAv.Ibn BattoutaB.P.1014AgdalRabatMorocco Laboratoire de Physique Theorique et Modeles Statistiques(LPTMS) Faculte des sciencesUniversite parissaclayParisFrance

In our study of super quantum discord between two excitonic qubits inside a coupled semiconductor quantum dots system,our primary focus is to uncover the impact of weak measurement on its quantum *** achieve this,we analyze how varying the measurement strength x,affects this super quantum correlation in the presence of thermal ***,we assess the effect of this variation on the system's evolution against its associated quantum parameters;external electric fields,exciton-exciton dipole interaction energy and F?rster *** findings indicate that adjusting x to smaller values effectively enhances the super quantum correlation,making weak measurements act as a *** adjustment ensures its robustness against thermal effects while preserving the non-classical attributes of the ***,our study unveils that the effect of weak measurements on this latter surpasses the quantum effects associated with the ***,manipulating the parameter x allows the weak measurement to function as a versatile tool for modulating quantum characteristics and controlling exciton-exciton interactions within the coupled semiconductor quantum dots system.

关键词： super quantum discord weak measurements measurement strength x semiconductor quantum dots exciton-exciton interactions

Dynamics of a multi-mode maximum entangled coherent state over an amplitude damping channel

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Chinese Physics B 2011年第11期20卷 67-73页

作者： A.El Allati Y.hassouni N.Metwally Faculté des Sciences Laboratoire de Physique Theorique URAC 13Université Mohammed V-Agdal The Abdus Salam International Centre for Theoretical Physics Mathematics Department College of ScienceUniversity of Bahrain Mathematics Department Faculty of ScienceSouth Valley University

The dynamics of the maximum entangled coherent state traveling through an amplitude damping channel is investigated. For small values of the transmissivity rate, the traveling state is very fragile to this noise channel, which suffers from the phase flip error with high probability. The entanglement decays smoothly for larger values of the transmissivity rate and speedily for smaller values of this rate. As the number of modes increases, the traveling state over this noise channel quickly loses its entanglement. The odd and even states vanish at the same value of field intensity.

关键词： entanglement quantum communication decoherence coherent states

On M-theory on real toric fibrations

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Communications in Theoretical Physics 2021年第8期73卷 67-74页

作者： A Belhaj H Belmahi M Benali S-E Ennadifi Y hassouni Y Sekhmani Equipe des Sciences de la matière et du rayonnement ESMaRDépartement de Physique Facultédes SciencesUniversitéMohammed V de RabatMorocco LHEP-MS Département de PhysiqueFaculte des SciencesUniversitéMohammed V de RabatMorocco

Borrowing ideas from elliptic complex geometry, we approach M-theory compactifications on real fibrations. Precisely, we explore real toric equations rather than complex ones exploited in F-theory and related dual models. These geometries have been built by moving real toric manifolds over real bases. Using topological changing behaviors, we unveil certain data associated with gauge sectors relying on affine lie symmetries.

关键词： real fibrations M-theory toric real manifolds affine lie symmetries

Quantum Steganography via Greenberger-Horne-Zeilinger GHZ_4 State

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Communications in Theoretical Physics 2012年第4期57卷 577-582页

作者： A.El Allati M.B.Ould Medeni Y.hassouni Facultédes Sciences Département de PhysiqueLPT-URAC-13UniversitéMohammed V-Agdal.Av.Ibn BattoutaB.P.1014RabatMaroc The Abdus Salam International Centre for Theoretical Physics TriesteItaly Facultédes Sciences Laboratory of Mathematic Informatics and ApplicationsUniversitéMohammed V-Agdal.Av.Ibn BattoutaB.P.1014RabatMaroc

A quantum steganography communication scheme via Greenberger-Horne-Zeilinger GHZ 4 state is constructed to investigate the possibility of remotely transferred hidden ***,the multipartite entangled states are become a hectic topic due to its important applications and deep effects on aspects of quantum ***,the scheme consists of sharing the correlation of four particle GHZ4 states between the legitimate *** insuring the security of the quantum channel,they begin to hide the secret information in the cover of *** the scheme with the previous quantum steganographies,capacity and imperceptibility of hidden message are *** security of the present scheme against many attacks is also discussed.

关键词： quantum steganography GHZ4 entangled state quantum cryptography quantum communication

Dynamics of Super Quantum Correlations and Quantum Correlations for a System of Three Qubits

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Communications in Theoretical Physics 2016年第4期65卷 447-452页

作者： F.Siyouri M.El Baz S.Rfifi Y.hassouni Laboratoire de Physique Theorique Departement de Physique Faculte des sciences Universite Mohammed V - AgdalAv. Ibn Battouta B.P. 1014 Agdal Rabat Morocco

The dynamics of quantum discord for two qubits independently interacting with dephasing reservoirs have been studied *** authors [***.A 88(2013) 034304] found that for some Bell-diagonal states(BDS)which interact with their environments the calculation of quantum discord could experience a sudden transition in its dynamics,this phenomenon is known as the sudden *** in the present paper,we analyze the dynamics of normal quantum discord and super quantum discord for tripartite Bell-diagonal states independently interacting with dephasing ***,we find that basis change does not necessary mean sudden change of quantum correlations.

关键词： super quantum discord normal quantum discord Bell-diagonal states measurement strength

Antioxidant activities and total phenol content of Inula viscosa extracts selected from three regions of Morocco

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Asian Pacific Journal of Tropical Biomedicine 2015年第3期5卷 228-233页

作者： Naima Chahmi Jaouad Anissi Sanae Jennan Abdellah Farah khalid Sendide Mohammed El hassouni Laboratory of Biotechnology Faculty of Sciences Dhar El Mehraz.Sidi Mohammed Ben Abdellah University Laboratory of Medicinal and Aromatic Plants and Natural Substances.National Institute of Medicinal and Aromatic Plants Al Akhawayn university School of Science and EngineeringLaboratoty of Biotechnology

Objective:To investigate antioxidant activity,total phenolic and flavonoid content of ethanol(E) and ethyl acetate(A) extracts of Inula viscosa aerial parts selected from three regions of Morocco(*** and Taounate).Methods:Antioxidants properties were measured by three different test systems of assay namely free radical scavenging activities against 2,2-diphenyI-1-picrylhydrazyl,total antioxidant capacity and iron-reducing *** phenolic content was measured by FolinCiocalteu ***:All the extracts showed significant antioxidant activities and contained important levels of *** ethanol extract(0.3 mg/mL) from Sefrou showed the greatest antioxidant capacity in the three systems of assay,which was probably due to its high content of polyphenols(274.39±6.94) mg gallic acid equivalent/g dry *** flavonoid content was found equal for all ***:Our results of antioxidant assays were justified and partially supported the popular usage of the tested *** high antioxidant activity found in the plant from Sefrou and its great biomass in this region suggested that Inula viscosa is a good source of natural antioxidants compounds which might have benefits for health.

关键词： Inula viscosa Folk medicine Flavonoids contents Polyphenols DPPH Reducing power

Cribriform Adenocarcinoma Salivary Gland-Type of the Nasopharynx: Case Report and Review of the Literature

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Open Journal of Pathology 2014年第2期4卷 79-82页

作者： Touria Bouhafa Abderahman Elmazghi Ouafae Masbah khalid hassouni Departement of Radiotherapy CHU HASSAN II Fez Faculty of Medicine and Pharmacy Fez Morocco

Primary salivary gland-type carcinoma of the nasopharynx is a rare malignancy with aggressive clinical behavior and poor prognosis. Few cases have been reported in the literature. We report the case of a salivary gland-type carcinoma of the nasopharynx diagnosed in a 70-year-old woman managed in department of radiotherapy at Hassan II University Hospital in Morocco. The patient received a total of 70 Gy of radiations, which were divided into 2 Gy per session during 7 weeks. Follow-up was performed regularly, including nasal endoscopic examination and nasopharyngeal CT. Evolution was marked by disease control after 12 months of follow-up. The aim of this work is to show the rarity of this entity, describe clinical, radiological and histological features and finally discuss the treatment management.

关键词： Nasopharynx Cribriform Adenocarcinoma Salivary Gland-Type Radiotherapy

Helminths Diversity and Distribution on Black Goats in the Oriental Areas of Morocco

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Journal of Life Sciences 2014年第2期8卷 188-191页

作者： Driss Lamrioui Taoufik hassouni Youssef Elmadhi Driss Lamri Driss Belghyti Laboratory of Environment and Renewable Energies Faculty of Sciences University Ibn Tofail Kenitra 14000 Morocco Laboratory of Scientific Research and Educational in the Mediterranean World Regional Center for Education and Formation Meknes 50000 Morocco Regional Center for Education and Formation Rabat 10000 Morocco Regional Center for Education and Formation Taza 35000 Morocco

The purpose of the study was to record and determine the incidence and distribution of helminth parasites that occur in goats in the oriental of Morocco. The study was conducted from December 2009 to November 2010. Seven helminth species belonging to three classes were found which comprised： Trichostrongylus colubriformis （52.50%）, Skrjabinema ovis （42.50%）, Trichuris ovis （23.33%）, Nematodirus spathiger （18.33%）, Haemonchus contortus （15.83%）, Moniezia expansa （19.16%）, Paramphistomum cervi （20%）. Trichostrongylus colubriform is the dominant nematode genera found to be infecting the animals. Infection rate for Skrjabinema ovis is very high in Ben Tajjit and Talsint. It is also necessary to cite that there is no relevance between helminth infection and sex （P 〉 0.05）.

关键词： Blackgoats helminth distribution epidemiology Morocco.