He honua hou o nā polokalamu optoelectronic

He honua hou onā mea hana optoelectronic

Ua hoʻomohala nā kānaka noiʻi ma ka Technion-Israel Institute of Technology i kahi milo i hoʻomalu pono ʻialaser ʻōpaema muli o kahi papa atomika hoʻokahi. Ua hiki kēia ʻike ʻana ma o kahi pilina pili-miʻo like ma waena o kahi papa atomika hoʻokahi a me kahi lattice miʻo photonic i hoʻopaʻa ʻia ma ka pae, e kākoʻo ana i kahi awāwa miʻo Q kiʻekiʻe ma o ka māhele ʻana o ka milo ʻano Rashaba o nā photons o nā kūlana i hoʻopaʻa ʻia i loko o ka continuum.
ʻO ka hopena, i paʻi ʻia ma Nature Materials a ua hōʻike ʻia i loko o kāna palapala noiʻi, e hoʻomākaukau ana i ke ala no ke aʻo ʻana i nā hanana e pili ana i ka milo i nā hana kuʻuna a me nā hana.nā ʻōnaehana 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 kumu optical spin i ke ʻano photon me ka hoʻololi electron, kahi e hāʻawi ai i kahi ʻano no ke aʻo ʻana i ka hoʻololi ʻike spin ma waena o nā electrons a me nā photons a me ka hoʻomohala ʻana i nā mea optoelectronic holomua.

Kūkulu ʻia nā microcavities optical Spin valley ma ka hoʻopili ʻana i nā lattices spin photonic me ka inversion asymmetry (ʻāpana kumu melemele) a me ka inversion symmetry (ʻāpana cladding cyan).
I mea e kūkulu ai i kēia mau kumu, ʻo kahi mea mua e pono ai ke hoʻopau i ka degeneracy spin ma waena o ʻelua mau kūlana spin kū'ē i ka photon a i ʻole ka ʻāpana electron. Hoʻokō pinepine ʻia kēia ma ka hoʻopili ʻana i kahi kahua magnetic ma lalo o ka hopena Faraday a i ʻole Zeeman, ʻoiai ʻo kēia mau ʻano hana e koi pinepine i kahi kahua magnetic ikaika a ʻaʻole hiki ke hana i kahi microsource. ʻO kekahi ala hoʻohiki e pili ana i kahi ʻōnaehana kāmela geometric e hoʻohana ana i kahi kahua magnetic artificial e hana i nā kūlana spin-split o nā photons i ka momentum space.
ʻO ka mea pōʻino, ua hilinaʻi nui nā nānā mua ʻana o nā mokuʻāina māhele spin i nā ʻano hoʻolaha kumu haʻahaʻa-mass, kahi e kau ai i nā palena maikaʻi ʻole i ka kūlike spatial a me ka manawa o nā kumu. Ua keakea ʻia kēia ʻano hana e ke ʻano spin-controlled o nā mea blocky laser-gain, ʻaʻole hiki ke hoʻohana maʻalahi ʻia e kaohi ikaika.nā kumu kukui, ʻoi aku hoʻi i ka loaʻa ʻole o nā kahua magnetic i ka mahana o ka lumi.
No ka hoʻokō ʻana i nā kūlana hoʻokaʻawale spin Q kiʻekiʻe, ua kūkulu nā mea noiʻi i nā lattices spin photonic me nā symmetries like ʻole, me kahi core me ka inversion asymmetry a me kahi envelope symmetric inversion i hoʻohui ʻia me kahi papa hoʻokahi WS2, e hana i nā awāwa spin i hoʻopaʻa ʻia i ka ʻaoʻao. ʻO ka lattice asymmetric inverse kumu i hoʻohana ʻia e nā mea noiʻi he ʻelua mau waiwai koʻikoʻi.
ʻO ka vector lattice reciprocal hilinaʻi spin-dependent i hoʻokumu ʻia e ka loli o ka wahi geometric o ka nanoporous anisotropic heterogeneous i haku ʻia me lākou. Hoʻokaʻawale kēia vector i ka hui hoʻohaʻahaʻa spin i ʻelua mau lālā spin-polarized i ka momentum space, i ʻike ʻia ʻo ka hopena photonic Rushberg.
ʻO kahi pālua o nā kūlana Q symmetric kiʻekiʻe (quasi) i hoʻopaʻa ʻia i loko o ka continuum, ʻo ia hoʻi nā awāwa photon spin ± K (Brillouin band Angle) ma ka lihi o nā lālā spin splitting, e hana i kahi superposition coherent o nā amplitudes like.
Ua ʻōlelo ʻo Polofesa Koren: "Ua hoʻohana mākou i nā monolides WS2 ma ke ʻano he mea loaʻa no ka mea he pseudo-spin kū hoʻokahi kēia metala hoʻololi band-gap pololei a ua aʻo nui ʻia ma ke ʻano he mea lawe ʻike ʻē aʻe i nā electrons awāwa. ʻO ke kikoʻī, ʻo kā lākou mau excitons awāwa ±K '(e hoʻolaha ana ma ke ʻano o nā planar spin-polarized dipole emitters) hiki ke hoʻonāukiuki koho ʻia e ka mālamalama spin-polarized e like me nā lula koho hoʻohālikelike awāwa, no laila e kaohi ikaika ana i kahi milo manuahi magnetic.kumu ʻike maka.
I loko o kahi microcavity awāwa wili hoʻokahi papa i hoʻohui ʻia, ua hoʻopili ʻia nā excitons awāwa ±K 'i ke kūlana awāwa wili ±K ma o ka hoʻohālikelike polarization, a ua ʻike ʻia ka laser spin exciton ma ka mahana o ka lumi e ka manaʻo hoʻihoʻi kukui ikaika. I ka manawa like, ʻo kalaserHoʻokele ke ʻano hana i nā excitons awāwa ±K 'kūʻokoʻa mua e ʻike i ke kūlana pohō liʻiliʻi loa o ka ʻōnaehana a hoʻokumu hou i ka pilina laka ma muli o ka pae geometric e kū pono ana i ke awāwa milo ±K.
ʻO ke kūlike o ke awāwa i hoʻokele ʻia e kēia ʻano hana laser e hoʻopau i ka pono no ka hoʻopau ʻana i ka mahana haʻahaʻa o ka hoʻopuehu intermittent. Eia kekahi, hiki ke hoʻololi ʻia ke kūlana pohō liʻiliʻi loa o ka laser monolayer Rashba e ka polarization pump linear (circular), kahi e hāʻawi ai i kahi ala e kaohi ai i ka ikaika laser a me ka kūlike spatial.
Ua wehewehe ʻo Polofesa Hasman: "ʻO ka mea i hōʻike ʻiaphotonicHāʻawi ka hopena Rashba awāwa wili i kahi ʻano hana maʻamau no ke kūkulu ʻana i nā kumu optical wili e hoʻopuka ana i ka ʻili. ʻO ke kūlike o ke awāwa i hōʻike ʻia ma kahi microcavity awāwa wili hoʻokahi papa i hoʻohui ʻia e lawe mai iā mākou i hoʻokahi ʻanuʻu kokoke i ka hoʻokō ʻana i ka ʻike quantum entanglement ma waena o nā excitons awāwa ±K 'ma o nā qubits.
No ka manawa lōʻihi, ua hoʻomohala kā mākou hui i nā optics spin, me ka hoʻohana ʻana i ka photon spin ma ke ʻano he mea hana kūpono no ka kaohi ʻana i ke ʻano o nā nalu electromagnetic. I ka makahiki 2018, me ka hoihoi i ka pseudo-spin awāwa i nā mea ʻelua-dimensional, ua hoʻomaka mākou i kahi papahana lōʻihi e noiʻi i ka kaohi hana o nā kumu optical spin atomic-scale i ka loaʻa ʻole o nā kahua magnetic. Hoʻohana mākou i ke kumu hoʻohālike Berry phase defect non-local e hoʻoponopono i ka pilikia o ka loaʻa ʻana o ka phase geometric coherent mai kahi exciton awāwa hoʻokahi.
Eia nō naʻe, ma muli o ka nele o kahi ʻano hana hoʻonohonoho ikaika ma waena o nā excitons, ʻo ka superposition coherent kumu o nā excitons awāwa he nui i loko o ke kumu kukui hoʻokahi-papa Rashuba i hoʻokō ʻia e mau ana i ka hoʻoholo ʻole ʻia. Hoʻoikaika kēia pilikia iā mākou e noʻonoʻo e pili ana i ke kumu hoʻohālike Rashuba o nā photons Q kiʻekiʻe. Ma hope o ka hana hou ʻana i nā ʻano kino hou, ua hoʻokō mākou i ka laser hoʻokahi-papa Rashuba i wehewehe ʻia ma kēia pepa.
Hoʻomākaukau kēia hoʻokō i ke ala no ke aʻo ʻana i nā hanana pilina spin coherent i nā kahua kuʻuna a me nā kahua quantum, a wehe i kahi ala hou no ka noiʻi kumu a me ka hoʻohana ʻana i nā polokalamu optoelectronic spintronic a me photonic.