Ib txoj kev tshawb fawb tshiab los ntawm University of Chicago thiab Shanxi University tau tshawb pom ib txoj hauv kev los simulate superconductivity siv lub teeb laser. Superconductivity tshwm sim thaum ob nplooj ntawv ntawm graphene yog me ntsis twisted raws li lawv yog txheej ua ke. Lawv cov txheej txheem tshiab tuaj yeem siv los nkag siab zoo txog tus cwj pwm ntawm cov ntaub ntawv thiab tuaj yeem qhib txoj hauv kev rau yav tom ntej quantum technologies lossis electronics. Cov txiaj ntsig kev tshawb fawb ntsig txog tsis ntev los no tau luam tawm hauv phau ntawv Journal Nature.

Plaub xyoos dhau los, cov kws tshawb fawb ntawm MIT tau tshawb pom qhov tsis txaus ntseeg: Yog tias cov nplooj ntawv tsis tu ncua ntawm cov pa roj carbon atom tau sib tw thaum lawv tau sib sau ua ke, lawv tuaj yeem hloov mus ua superconductors. Cov ntaub ntawv tsis tshua muaj xws li "superconductors" muaj lub peev xwm tshwj xeeb los xa cov hluav taws xob tsis zoo. Superconductors kuj yog lub hauv paus ntawm kev sib nqus resonance imaging tam sim no, yog li cov kws tshawb fawb thiab engineers tuaj yeem nrhiav tau ntau yam kev siv rau lawv. Txawm li cas los xij, lawv muaj ntau qhov tsis zoo, xws li yuav tsum tau ua kom txias hauv qab xoom kom ua haujlwm zoo. Cov kws tshawb fawb ntseeg tias yog lawv nkag siab txog lub cev thiab cov teebmeem, lawv tuaj yeem tsim cov superconductors tshiab thiab qhib ntau yam kev siv thev naus laus zis. Chin's lab thiab Shanxi University cov pab pawg tshawb fawb yav dhau los tau tsim txoj hauv kev los rov ua cov ntaub ntawv quantum complex siv cov atoms thiab lasers kom lawv yooj yim rau kev txheeb xyuas. Nyob rau hauv lub meantime, lawv cia siab tias yuav ua ib yam nrog ib tug twisted bilayer system. Yog li, pab pawg tshawb fawb thiab cov kws tshawb fawb los ntawm Shanxi University tau tsim ib txoj hauv kev tshiab los "simulate" cov lattices twisted. Tom qab txias cov atoms, lawv siv lub laser los npaj cov rubidium atoms rau hauv ob lub lattices, stacked rau saum ib leeg. Cov kws tshawb fawb tau siv microwaves los pab txhawb kev sib cuam tshuam ntawm ob lub lattices. Nws hloov tawm tias ob qho tib si ua haujlwm zoo ua ke. Cov khoom tuaj yeem txav mus los ntawm cov khoom siv yam tsis tau ua kom qeeb los ntawm kev sib txhuam, ua tsaug rau qhov tshwm sim hu ua "superfluidity," uas zoo ib yam li superconductivity. Lub cev muaj peev xwm los hloov qhov kev taw qhia kev sib tw ntawm ob lub lattices tso cai rau cov kws tshawb fawb los tshawb pom ib yam tshiab ntawm superfluid hauv atoms. Cov kws tshawb fawb pom tias lawv tuaj yeem kho lub zog ntawm ob lub lattices 'kev sib cuam tshuam los ntawm kev sib txawv ntawm qhov sib txawv ntawm cov microwaves, thiab lawv tuaj yeem tig ob lub lattices nrog lub laser yam tsis muaj kev siv zog ntau - ua rau nws hloov tau zoo heev. Piv txwv li, yog tias tus kws tshawb fawb xav tshawb txog ntau tshaj li ob mus rau peb lossis plaub txheej, qhov teeb tsa tau piav qhia saum toj no ua rau nws yooj yim ua li ntawd. Txhua zaus ib tug neeg nrhiav tau ib tug tshiab superconductor, lub ntiaj teb physics ntsia nrog kev qhuas. Tab sis lub sij hawm no qhov tshwm sim yog tshwj xeeb tshaj yog zoo siab vim hais tias nws yog raws li xws li ib tug yooj yim thiab ntau yam khoom raws li graphene.