Lub ntiaj teb tshiab ntawmOptoelectronic li
Cov kws tshawb nrhiav ntawm Technor-Israel Lub Tsev Haujlwm ntawm Technology tau tsim ib coherented tswj kev kivKho Qhov Muag Laserraws ib txheej atomic txheej. Qhov kev tshawb pom no tau ua tau los ntawm kev sib txuam nrog ib qho atomiced ntawm ib qho siab contined poty los ntawm rashaba-hom spin splitting ntawm photons ntawm photons ntawm photons hauv kev txuas ntxiv.
Cov txiaj ntsig, luam tawm nyob rau hauv cov khoom siv thiab tau hais qhia nyob rau hauv nws cov lus tshawb fawb, paves txoj kev rau kev kawm ntawm coherent spin-ntsig txog kev sib tw ua ke hauv classical thiabQuantum Systems, thiab qhib cov avenes tshiab rau kev tshawb nrhiav hauv lub hauv paus thiab kev siv hluav taws xob thiab photon kiv hauv optoelectronic li. Tus tig kho qhov muag ua ke ntawm lub photon hom nrog kev hloov pauv hluav taws xob, uas muab ib txoj kev hloov pauv hluav taws xob ntawm cov khoom siv hluav taws xob thiab cov photons thiab txhim kho cov khoom siv ntse areoelectronic.
Slear Valley kho qhov muag microcavities tau tsim los ntawm intermonic suring potymmetry (Daj Symmetry (Cyan Cladding cheeb tsam).
Txhawm rau txhim kho cov peev txheej no, yuav tsum tau ua ua ntej yog kom tshem tawm cov kiv-kiv degenteracy ntawm ob qho rov qab spin xeev nyob rau hauv lub photon lossis chaw siv hluav taws xob. Qhov no feem ntau yog ib txwm ua tiav los ntawm kev thov daim teb nyob rau hauv ib qho chaw sib nqus lossis zeeman cov nyhuv, txawm tias cov kev sib nqus thiab tsis tuaj yeem tsim lub microsource. Lwm qhov kev txhawb nqa yog raws li cov koob yees duab geometric uas siv cov duab tsim khoom lag luam los tsim cov ntsiab lus saws ntawm cov ntsiab lus ntawm photons.
Hmoov tsis zoo, kev soj ntsuam yav dhau los ntawm Spilit States tau hais txog kev sib tw ntau ntawm cov kev sib tw tsis zoo ntawm cov khoom sib xws thiab cov txheej txheem sab hauv qab. Txoj hauv kev no kuj tseem hampered los ntawm cov kiv-tswj-tswj ntawm blocky laser-txais cov ntaub ntawv, uas tsis tuaj yeem siv tau yooj yim los tswjQhov rooj los teeb tsa, tshwj xeeb tshaj yog nyob rau hauv qhov tsis muaj kev sib nqus teb ntawm chav tsev kub.
Yuav kom ua tiav qib-q sus-splitting hais tias, cov kws tshawb fawb txua cov lus qhia sib txawv, suav nrog lub hnab ntawv asymmetries sib txawv thiab cov txheej, los tsim cov khoom qab tom qab. Qhov yooj yim Intymmetric lattice siv los ntawm cov kws tshawb fawb muaj ob lub zog tseem ceeb.
Cov tswj hwm kev tig-tsim kev hloov pauv rov qab los ntawm cov theem geometric tshwm sim ntawm cov heterogeneous anisotropic nanopous composed ntawm lawv. Tus vector splits tus tig degradation band ua ob spin-polarized ceg nyob rau hauv lub sij hawm qhov chaw, hu ua lub potonic Rushberg nyhuv.
Ib khub ntawm siab q symmetric (quasi) ciam teb, yog ± k (brillouin band lub hav, ua ib coherent superposition ntawm sib luag meditudes.
Protoressor koren tau sau tseg: "Peb siv WS2 cov monolides raws li cov khoom siv txuas ncaj qha muaj ib qho kev hloov pauv ntawm cov ntaub ntawv ntxiv hauv Valley electrons. Tshwj xeeb, lawv ± K 'hav rwg (uas radiate nyob rau hauv daim ntawv ntawm planar spip-polarized dip-polarized teeb raws li Valley Xaiv Kev Xaiv DawbOptical Tau.
Nyob rau hauv ib txheej txheej kiv kiv kiv tshiab valley microcavity, ± k 'Valley recitons, thiab tus kiv kiv zoo siab ntawm chav sov yog pom tau los ntawm cov lus pom muaj zog lub teeb. Tib lub sijhawm, tuslaserMechanism tsav pib theem pib-K 'Valley excitons kom paub lub sijhawm luv ntawm cov kab ke thiab rov tsim kho cov kab sib txuam raws li cov theem geometric rov qab.
Valley Cohero tsav los ntawm Laser Systemism tshem tawm qhov kev xav tau qhov kev xav tau qis qis dua ntawm cov sib txawv. Tsis tas li ntawd, qhov tsawg kawg nkaus poob lub xeev ntawm Rashba Monolayer Laser tuaj yeem hloov kho polarization, uas muab txoj hauv kev los tswj cov lag luam laser thiab spatial Coherence. "
Professor Hasman piav qhia tias: "Tus qhialub photonicSpin Valley Rashba cov nyhuv muab cov txheej txheem dav dav rau kev tsim cov khoom saum npoo-emitting ret expect cov chaw. Valley Coherence tau ua rau muaj ib-txheej sib xyaw kiv cua Valley Microcavity coj peb ib kauj ruam ze rau kev ua tiav Quantum cov ntaub ntawv ntawm ± k 'Valley excitons kev sib yuav ntawm kev ncua.
Tau ntev heev, peb pab neeg tau tsim kho cov spin optics, siv Photon spin raws li cov cuab yeej zoo rau kev tswj hwm kev coj cwj pwm ntawm electromagnetic vuag. Nyob rau hauv 2018, intrigued los ntawm lub hav pseudo-kiv hauv txoj haujlwm muaj ob-seem, peb tau pib tshawb xyuas cov khoom siv kho qhov muag ntev hauv qhov chaw tsis muaj hlau. Peb siv cov txiv hmab txiv ntoo uas tsis yog-nyob hauv zos ib qho qauv los daws cov teeb meem ntawm kev tau txais cov theem geometric ntawm ib lub hav zoo.
Txawm li cas los xij, vim tsis muaj qhov muaj zog synchronization mechanism nruab nrab ntawm ntau lub kwj deg uas tau tiav cov khoom uas tau ua tiav tsis tau txais kev tsis muaj cai. Qhov teeb meem no txhawb peb kom xav txog Rasuba qauv ntawm qib siab q photons. Tom qab cov qauv tshiab lub cev tshiab, peb tau siv Rashuba ib-txheej laser piav hauv daim ntawv no. "
Qhov kev kawm no ua tiav txoj kev rau kev kawm ntawm coherent kiv kev sib txheeb nrog rau kev tshawb fawb thiab siv Spintroelectronic li.
Lub Sijhawm Post: Mar-12-2024