Isi nshya yibikoresho bya optoelectronic

Isi nshya yaibikoresho bya optoelectronic

Abashakashatsi bo mu Ishuri Rikuru ry’ikoranabuhanga rya Technion-Isiraheli bakoze uruziga rugenzurwa nezalaser optiquebishingiye ku gipimo kimwe cya atome. Ubu buvumbuzi bwashobotse kubera imikoranire ihuriweho na spin hagati yumurongo umwe wa atome hamwe nu muyoboro utambitse wa fotonike uzenguruka utambitse, ushyigikira ikibaya kinini cya Q kizenguruka binyuze mu bwoko bwa Rashaba buzengurutswe na fotone y’ibihugu bihuza umugabane.
Ibisubizo, byasohotse mubidukikije kandi bikagaragazwa mubushakashatsi bwakozwe muri make, bitanga inzira yo kwiga ibintu bifitanye isano na spin bifitanye isano na classique nasisitemu ya kwant, kandi ifungura inzira nshya kubushakashatsi bwibanze no gukoresha ibikoresho bya electron na foton bizunguruka mubikoresho bya optoelectronic. Inkomoko ya spin optique ihuza uburyo bwa foton ninzibacyuho ya electron, itanga uburyo bwo kwiga guhanahana amakuru hagati ya electron na fotone no guteza imbere ibikoresho bya optoelectronic.

Microcavities ya spin Valley optique yubatswe muguhuza fotonike ya fotonike hamwe na asimmetrie ya inversion (akarere k'umuhondo) hamwe no guhinduranya (akarere kegeranye).
Kugirango twubake ayo masoko, icyangombwa ni ugukuraho kwangirika kwizunguruka hagati yuburyo bubiri butandukanye muri foton cyangwa igice cya electron. Ibi mubisanzwe bigerwaho mugukoresha imbaraga za magneti munsi ya Faraday cyangwa Zeeman, nubwo ubu buryo busanzwe busaba imbaraga za rukuruzi kandi ntibishobora kubyara microsource. Ubundi buryo butanga icyizere bushingiye kuri sisitemu ya kamera ya geometrike ikoresha umurima wa magnetiki wimbaraga kugirango ubyare ibintu bitandukanya fotone mumwanya muto.
Kubwamahirwe make, ubushakashatsi bwibanze kuri spin yacitsemo ibice byashingiye cyane kuburyo bwo gukwirakwiza ibintu bike, ibyo bikaba bitera imbogamizi ku guhuza umwanya n’igihe gito. Ubu buryo kandi bubangamiwe nuburyo bugenzurwa nubushakashatsi bwibikoresho bya laser byunguka, bidashobora cyangwa bidashobora gukoreshwa byoroshye kugenzura nezaisoko yumucyo, cyane cyane mugihe habuze imirima ya magnetiki mubushyuhe bwicyumba.
Kugirango bagere kuri leta-Q-itandukanijwe cyane, abashakashatsi bubatse ibyuma bifotora bifotora bifite imiterere itandukanye, harimo intangiriro ifite asimmetrie ya inversion hamwe n ibahasha ya inversion ihuza ibahasha ihujwe na WS2 imwe, kugirango itange ikibaya kizunguruka. Ibanze ryibanze rya asimmetrike ikoreshwa nabashakashatsi ifite ibintu bibiri byingenzi.
Igenzurwa rya spin-biterwa na retrocal lattice vector iterwa na geometrike ya fonction space space ya heterogeneous anisotropic nanoporous igizwe nabo. Iyi vector igabanyijemo ibice byizunguruka mu mashami abiri azunguruka mu mwanya w’umuvuduko, bizwi nkingaruka ya Photonic Rushberg.
Ihuriro ryibintu byinshi Q bihujwe (quasi) bihuza leta mukomerezaho, aribyo ± K (Brillouin band Angle) Photon spin ibibaya kumpande zamashami agabanyijemo amashami, bikora superpression ihuriweho na amplitude angana.
Porofeseri Koren yagize ati: “Twifashishije monolide ya WS2 nk'ibikoresho byunguka kubera ko iyi disulfide itandukanya ibyuma bitandukanya ibyuma bifite umwihariko wa pseudo-spin kandi byizwe cyane nk'ubundi buryo bwo gutwara amakuru muri electroni zo mu kibaya. By'umwihariko, moteri zabo za ± K '(zirabagirana muburyo bwa planar spin-polarized dipole emitters) zirashobora gushimishwa no guhitamo urumuri ruzengurutse ukurikije amategeko yo kugereranya ikibaya, bityo bikagenzura cyane kuzenguruka rukuruzi.isoko nziza.
Muri microcavity igizwe na layer imwe ihuriweho, moteri ya ± K 'ihujwe na leta ya ± K ikibaya cya spin ikoresheje polarisiyasi ihuza, kandi laser exciton laser mubushyuhe bwicyumba igerwaho nigitekerezo gikomeye cyo gutanga ibitekerezo. Igihe kimwe ,.laseruburyo butangiza icyiciro cya mbere cyigenga ± K 'ikibaya cyo gushakisha kugirango habeho igihombo gito cya sisitemu hanyuma wongere ushyireho gufunga hashingiwe ku cyiciro cya geometrike giteganye na ± K kuzenguruka.
Guhuza ikibaya biterwa nubu buryo bwa laser bikuraho gukenera ubushyuhe buke bwo gukwirakwiza rimwe na rimwe. Byongeye kandi, igihombo ntarengwa cya lazeri ya Rashba monolayeri irashobora guhindurwa n’umurongo wa pompe ukomatanya (umuzenguruko), utanga uburyo bwo kugenzura ubukana bwa lazeri no guhuza umwanya. ”
Porofeseri Hasman abisobanura: “IbyerekanwePhotonickuzenguruka ikibaya Rashba itanga uburyo rusange bwo kubaka ubuso busohora spin optique. Ihuriro ryikibaya ryerekanwe murwego rumwe rwuzuzanya ruzengurutse microcavity ituzanira intambwe imwe yo kugera ku kugera kumakuru yamakuru hagati ya ± K 'ibishimisha ikibaya binyuze kuri qubits.
Kuva kera, itsinda ryacu ryatezimbere spin optique, dukoresha foton spin nkigikoresho cyiza cyo kugenzura imyitwarire yumuriro wa electroniki. Muri 2018, dushishikajwe n’ikibaya pseudo-spin mu bikoresho bifite ibipimo bibiri, twatangiye umushinga muremure wo gukora iperereza ku kugenzura imikorere ya atome-nini ya spin optique idahari. Twifashishije icyitegererezo cya Berry icyiciro cya defekt kugirango dukemure ikibazo cyo kubona icyiciro cya geometrike ihujwe kuva muri exciton imwe.
Ariko, kubera kubura uburyo bukomeye bwo guhuza imbaraga hagati ya excitons, ihame ryibanze ryuzuzanya ryibibaya byinshi byo mu kibaya muri Rashuba isoko yumucyo wumucyo wagezeho ntikirakemuka. Iki kibazo kidutera imbaraga zo gutekereza kuri moderi ya Rashuba ya fotone yo hejuru. Nyuma yo guhanga uburyo bushya bw'umubiri, twashyize mu bikorwa lazeri imwe ya Rashuba yasobanuwe muri iyi nyandiko. ”
Ibi byagezweho bitanga inzira yo kwiga ibintu bifitanye isano na spin bifitanye isano ya classique na kwant, kandi ifungura inzira nshya kubushakashatsi bwibanze no gukoresha ibikoresho bya spintronic na Photonic optoelectronic ibikoresho.