He honua hou o nā mea optoelectronic

He honua hou onā mea hana optoelectronic

Ua hoʻomohala nā mea noiʻi ma ka Technion-Israel Institute of Technology i kahi milo i hoʻomalu ʻialaser ʻōpikama muli o ka papa ʻātoma hoʻokahi.Ua loaʻa kēia ʻike ma muli o kahi pilina pili pili pili i waena o kahi papa atomika hoʻokahi a me kahi kiʻi kiʻi kiʻi kiʻi kiʻi kiʻekiʻe, e kākoʻo ana i ke awāwa spin-Q kiʻekiʻe ma o Rashaba-type spin splitting o nā kiʻi o nā mokuʻāina paʻa i ka continuum.
ʻO ka hopena, i paʻi ʻia ma Nature Materials a i hōʻike ʻia i loko o kāna pōkole noiʻi, hoʻokaʻawale i ke ala no ke aʻo ʻana i nā hanana pili pili pili i ka spinal a meʻōnaehana quantum, a wehe i nā ala hou no ka noiʻi kumu a me nā noi o ka electron a me ka photon spin i nā mea optoelectronic.Hoʻohui ka spin optical source i ke ʻano photon me ka hoʻololi electron, e hāʻawi ana i kahi ala no ke aʻo ʻana i ka hoʻololi ʻike spin ma waena o nā electrons a me nā kiʻi a me ka hoʻomohala ʻana i nā polokalamu optoelectronic holomua.

Hoʻokumu ʻia nā microcavities optical spin awāwa ma o ka hoʻopili ʻana i nā lattices spin photonic me ka asymmetry inversion ('āpana ʻāpana melemele) a me ka symmetry inversion (ʻāpana cyan cladding).
No ke kūkulu ʻana i kēia mau kumu, pono e hoʻopau i ka degeneracy milo ma waena o nā mokuʻāina ʻē aʻe i loko o ka photon a i ʻole ka ʻāpana electron.Loaʻa ʻia kēia ma ka hoʻohana ʻana i kahi māla magnetic ma lalo o kahi hopena Faraday a i ʻole Zeeman, ʻoiai ʻo kēia mau ʻano hana e koi pinepine ai i kahi māla magnetic ikaika a ʻaʻole hiki ke hana i kahi microsource.Hoʻokumu ʻia kahi ala hoʻohiki ʻē aʻe ma luna o kahi ʻōnaehana kamera geometric e hoʻohana ana i ke kahua magnetic artificial e hoʻohua i nā mokuʻāina spin-split o nā kiʻi i loko o ka manawa.
ʻO ka mea pōʻino, ua hilinaʻi nui ka nānā ʻana o nā mokuʻāina spin split i nā ʻano hoʻolaha kumu haʻahaʻa haʻahaʻa, e kau ana i nā kaohi ʻino i ka pili ʻana o ka spatial a me ke kino o nā kumu.Hoʻopilikia pū ʻia kēia ala e ke ʻano o ka spin-controlled o nā mea waiwai laser blocky, ʻaʻole hiki a hiki ʻole ke hoʻohana maʻalahi e hoʻokele ikaika.kumu kukui, ʻoi aku ka nui o ka nele o nā māla magnetic i ka lumi wela.
No ka hoʻokō ʻana i nā mokuʻāina spin-splitting kiʻekiʻe, ua kūkulu ka poʻe noiʻi i nā lattice spin photonic me nā ʻano like ʻole, me kahi kumu me ka asymmetry inversion a me kahi envelope symmetric inversion i hoʻohui ʻia me kahi papa hoʻokahi WS2, e hana i nā awāwa milo i kāohi ʻia.ʻO ka lattice inverse asymmetric maʻamau i hoʻohana ʻia e nā mea noiʻi he ʻelua mau waiwai koʻikoʻi.
ʻO ke kāʻei hoʻopololei pili pili i ka milo i hoʻokumu ʻia e ka hoʻololi ʻokoʻa o ka manawa geometric o ka nanoporous anisotropic heterogeneous i haku ʻia e lākou.Hoʻokaʻawale kēia vector i ka hui hoʻohaʻahaʻa milo i ʻelua mau lālā spin-polarized ma kahi ākea, i ʻike ʻia ʻo ka hopena Rushberg photonic.
ʻO nā mokuʻāina kiʻekiʻe Q symmetric (quasi) i hoʻopaʻa ʻia i loko o ka continuum, ʻo ia hoʻi ± K(Brillouin band Angle) photon awāwa milo ma ka lihi o nā lālā milo, e hana i kahi superposition pili o nā amplitudes like.
Ua ʻōlelo ʻo Polofesa Koren: "Ua hoʻohana mākou i nā monolides WS2 i mea waiwai no ka mea ʻo kēia band-gap transition metal disulfide he pseudo-spin kū hoʻokahi a ua aʻo nui ʻia ma ke ʻano he mea lawe ʻike ʻē aʻe i nā electrons awāwa.ʻO ka mea kikoʻī, hiki i kā lākou ± K 'valley excitons (e hoʻomālamalama i ke ʻano o ka planar spin-polarized dipole emitters) hiki ke koho maikaʻi ʻia e nā kukui wili-polarized e like me nā lula koho hoʻohālikelike awāwa, pēlā e hoʻomalu ai i kahi milo magnetically manuahi.puna ʻike.
I loko o kahi microcavity milo awāwa hui pū ʻia, ua hui ʻia nā ± K 'valley excitons i ka mokuʻāina ʻo ± K spin awāwa ma o ka hoʻohālikelike ʻana i ka polarization, a ʻike ʻia ka laser exciton spin ma ka lumi wela e nā manaʻo māmā ikaika.I ka manawa like, kalaserHoʻokuʻu ka mīkini i nā excitons kūʻokoʻa kūʻokoʻa mua o ke awāwa e ʻike i ke kūlana pohō haʻahaʻa o ka ʻōnaehana a hoʻokumu hou i ka pilina paʻa ma muli o ka pae geometric e kū pono ana i ke awāwa spin ±K.
ʻO ka hoʻohui ʻana o ke awāwa i alakaʻi ʻia e kēia mīkini laser e hoʻopau i ka pono no ka haʻahaʻa haʻahaʻa haʻahaʻa o ka hoʻopuehu ʻana.Eia kekahi, hiki ke hoʻololi ʻia ke kūlana haʻahaʻa o ka Rashba monolayer laser e ka linear (circular) pump polarization, e hāʻawi ana i kahi ala e kāohi ai i ka ikaika laser a me ka coherence spatial.
Ua wehewehe ʻo Polofesa Hasman: "ʻO ka mea i hōʻike ʻiapaʻi kiʻiHāʻawi ka hopena spin alley Rashba i kahi hana maʻamau no ke kūkulu ʻana i nā kumu opua spin-emitting.ʻO ka pilina o ke awāwa i hōʻike ʻia i loko o kahi microcavity spin awāwa hoʻokahi-layer e lawe mai iā mākou i hoʻokahi ʻanuʻu kokoke i ka hoʻokō ʻana i ka ʻike kuʻuna entanglement ma waena o ± K 'valley excitons ma o qubits.
No ka manawa lōʻihi, ke hoʻomohala nei kā mākou hui i ka spin optics, me ka hoʻohana ʻana i ka photon spin ma ke ʻano he mea hana pono no ka hoʻomalu ʻana i ke ʻano o nā nalu electromagnetic.I ka makahiki 2018, hoʻohuhū ʻia e ke awāwa pseudo-spin i nā mea ʻelua-dimensional, ua hoʻomaka mākou i kahi papahana lōʻihi e noiʻi i ka mana ikaika o nā kumu optical spin atomic-scale i ka nele o nā māla magnetic.Hoʻohana mākou i ke kumu hoʻohālike Berry phase defect ʻaʻole kūloko e hoʻoponopono i ka pilikia o ka loaʻa ʻana o ka pae geometric coherent mai kahi exciton awāwa hoʻokahi.
Eia nō naʻe, ma muli o ka nele o kahi ʻōnaehana hoʻonohonoho ikaika ma waena o nā excitons, ʻaʻole i hoʻoholo ʻia ka superposition koʻikoʻi o nā excitons awāwa he nui i ka Rashuba hoʻokahi kumu kukui i hoʻokō ʻia.Hoʻoulu kēia pilikia iā mākou e noʻonoʻo e pili ana i ke ʻano Rashuba o nā kiʻi kiʻekiʻe Q.Ma hope o ka hana hou ʻana i nā ʻano hana kino hou, ua hoʻokō mākou i ka laser one-layer Rashuba i wehewehe ʻia ma kēia pepa.
Hāʻawi kēia hoʻokō i ke ala no ke aʻo ʻana i nā ʻano hoʻohālikelike spin correlation coherent ma nā kula kahiko a me quantum, a wehe i kahi ala hou no ka noiʻi kumu a me ka hoʻohana ʻana i nā mea hana spintronic a me photonic optoelectronic.