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Gheorghe Medinschi
19.04.1951 - 26.01.2019


Contacts:
Institute of Applied Physics
5 Academiei str.
Chisinau, MD-2028
MOLDOVA (Rep. of)
phone: +(373) 22 738150
fax: +(373) 22 738149
email: [javascript protected email address]

Project CSSDT 15.817.02.05F Condensarea Bose-Einstein a excitonilor și atomilor în nano și microstructuri sub influenta câmpurilor electromagnetice

Type :Institutional project, SCSTD code 15.817.02.05F, acronym - CBECEM
Head :Sveatoslav Moskalenko, acad. ASM
Duration :2015 - 2019
Division(s) :Laboratory of Theoretical Physics “Vsevolod Moskalenko”

The main goal of the project concerns the investigations of the phenomenon of the Bose-Einstein condensation (ВЕС) in a mixt matter-light system formed by the two-dimensional (2D) magnetoexcitons and by the photons accumulated into the microresonator what leads to the formation of the new mixed quasipaticles named as polaritons. The ВЕС of 2D polaritons on the lower branch of the dispersion law in the point of the in-plane wave vector k||=0 will be investigated. In such conditions new quantum states as, for example, the coherent superposition of the acoustical plasmon magnetoexciton and photon states of the plasmoriton-type appear. The ВЕС of atoms and molecules in the traps in the presence of the two-photon Raman quantum transitions will be studied taking into account the tunneling of the particles between the potential wells of the traps.

The initial idea concerning the possibility of the ВЕС and of the superfluidity of the ecxcitons in semiconductors with finite life time in conditions of the quasiequilibrium but far from the thermal equilibrium was suggested and intensively investigated during last 50 years by the collaborators of the Institute of Applied Physics. At present time this possibility was experimentally realized in many laboratories of the world in the variant of the ВЕС of the 2D polaritons in microcavities. The theoretical and experimental investigations in this direction becomes an actual branch of the condensed matter physics [1-6]. The methods of the theoretical physics such as the Green's functions method and the Feynman diagrams technique will be used studying the collective elementary excitations.

The coherent macroscopic state will be introduced using the method elaborated by Keldysh, Kopaev, Kozlov. The theory of the weakly nonideal Bose-gas and the Bogoliubov u-v transformation of the creation and annihilation operators of the quasiparticles will be the used.

The Rabi frequencies, which determine the spread and the splitting of the polariton branches will be determined. The collective elementary excitations in the mixed system of 2D magnetoexcitons and of the photons confined into the resonator in the state of the ВЕС of the polaritons will be performed in the frame of two models. One of them the explicit participation of the optical and acoustical plasmons, of the magnetoexcitons and of the confined photons takes into account. The second one on the model of the weakly nonideal Bose-gas formed by 2D polarotons is based.

Sveatoslav Moskalenko
Dr.Sci., prof., acad. ASM
head of laboratory

cab.: 225
tel.: +(373) 22 738084
e-mail: [javascript protected email address]
www: http://www.phys.asm.md/ro/personalpages/smoskalenko
Igor Beloussov
Dr.Sci., prof. 
principal scientific researcher
cab.: 224
tel.: +(373) 22 738084
e-mail:[javascript protected email address]
www: http://www.phys.asm.md/ro/personalpages/ibeloussov
Piotr Khadzhi
Dr.Sci., prof. 
principal scientific researcher
cab.: 225
tel.: +(373) 22 738084
e-mail: [javascript protected email address]
www: http://www.phys.asm.md/ro/personalpages/pkhadzhi
Evgheni Dumanov
Ph.D., assoc. prof. 
leading scientific researcher
cab.: 223
tel.: +(373) 22 738084
e-mail: [javascript protected email address]
www: http://www.phys.asm.md/ro/personalpages/edumanov
Corneliu Șochichiu
dr., conf. 
cercetător științific coordonator
cab.: 439
tel.: +(373) 22 738084
e-mail: [javascript protected email address]
www: http://www.phys.asm.md/ro/personalpages/csochichiu
Igor Podlesny
Ph.D., assoc. prof. 
leading scientific researcher
cab.: 224
tel.: +(373) 22 738084
e-mail: [javascript protected email address]
www: http://www.phys.asm.md/ro/personalpages/ipodlesny
Spiridon Rusu
Ph.D.  
leading scientific researcher
cab.:
tel.: +(373) 22 
e-mail: [javascript protected email address]
www: http://www.phys.asm.md/ro/personalpages/srusu
Igor Dobindă
dr.  
cercetător științific superior
cab.: 007
tel.: +(373) 22 738084
e-mail: [javascript protected email address]
www: http://www.phys.asm.md/ro/personalpages/idobynde
Ludmila Șutova
   
cercetător științific
cab.: 439
tel.: +(373) 22 738084
e-mail: [javascript protected email address]
www: http://www.phys.asm.md/ro/personalpages/lshutova
Igor Leleacov
   
cercetător științific
cab.: 224
tel.: +(373) 22 738084
e-mail: [javascript protected email address]
www: http://www.phys.asm.md/ro/personalpages/ileleacov
Vladimir Pavlenco
   
cercetător științific
cab.: 007
tel.: +(373) 22 738084
e-mail: [javascript protected email address]
www: http://www.phys.asm.md/ro/personalpages/vpavlenco
Ion Zubac
   
cercetător științific
cab.: 224
tel.: +(373) 22 738084
e-mail: [javascript protected email address]
www: http://www.phys.asm.md/ro/personalpages/izubac
Valentina Bajireanu
   
inginer coordonator
cab.: 223
tel.: +(373) 22 738084
e-mail: [javascript protected email address]
www: http://www.phys.asm.md/ro/personalpages/vbajireanu
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