Kev sib cuam tshuam ntawm lub teeb thiab cov hlau nplaum yog txhim kho hauv cov hlau nplaum sib nqus.
Duab qhov chaw: City College of New York
Kev tshawb fawb thiab thev naus laus zis niaj hnub (Xov Xwm Liu Xia) Cov kws tshawb fawb los ntawm Lub Nroog College ntawm New York hauv Tebchaws Meskas tau luam tawm ib daim ntawv hauv phau ntawv xov xwm "Nature" luam tawm rau hnub tim 16, hais tias kev teeb pom kev hauv cov khoom siv hlau nplaum tuaj yeem txhim kho lawv cov khoom muaj txiaj ntsig, thiab kev sib cuam tshuam ntawm lub teeb thiab hlau nplaum Cov nyhuv kuj yuav ntxiv dag zog. Cov lus teb kho qhov muag muaj zog ntawm cov hlau nplaum yog qhov tseem ceeb rau kev txhim kho cov hlau nplaum lasers thiab magneto-optical nco cov cuab yeej, nrog rau cov ntawv thov quantum transduction.
Nyob rau hauv txoj kev tshawb fawb tshiab, ib pab neeg coj los ntawm Vinod Menon qhia txog cov khoom ntawm cov hlau nplaum txheej uas muaj cov excitons, quasiparticles nrog kev sib cuam tshuam ntawm qhov muag tshwj xeeb. Vim li no, cov khoom siv nws tus kheej muaj peev xwm ntes lub teeb.
Lawv cov kev sim tau pom tias cov khoom siv kho qhov muag teb rau qhov tshwm sim sib nqus yog qhov kev txiav txim siab ntau dua li cov hlau nplaum zoo tib yam. Cov kws tshawb fawb tau sau tseg tias kev sib cuam tshuam ntawm lub teeb thiab cov hlau nplaum yog qhov ua kom zoo dua qub vim tias lub teeb rov qab mus rau hauv cov hlau nplaum.
Thaum ib qho kev sib nqus sab nraud yog siv rau cov khoom siv, qhov ze-infrared reflection ntawm lub teeb hloov tau zoo heev thiab cov khoom tseem ceeb hloov xim. Qhov no yog qhov muaj zog heev magneto-optical teb. Tab sis feem ntau, lub teeb tsis hnov mob uas muaj zog rau cov hlau nplaum thiab cov khoom sib nqus, yog li cov ntawv thov kev siv raws li cov nyhuv magneto-optical feem ntau xav tau kev kho qhov muag pom tau zoo heev. Cov kws tshawb fawb tau taw qhia tias niaj hnub no kev siv cov khoom siv hlau nplaum feem ntau cuam tshuam nrog cov xwm txheej magnetoelectric. Muab kev sib cuam tshuam zoo ntawm cov hlau nplaum thiab lub teeb, cov hlau nplaum lasers thiab optically tswj magnetic nco yuav raug tsim nyob rau yav tom ntej.
