Kev tsim lub khoos phis tawj quantum uas tuaj yeem daws cov teeb meem, uas cov khoos phis tawj qub tsuas yog daws tau nrog kev siv zog loj lossis tsis daws tau kiag li - qhov no yog lub hom phiaj tam sim no uas cov pab pawg tshawb fawb thoob ntiaj teb tab tom nrhiav. Qhov laj thawj: Cov teebmeem quantum, uas pib los ntawm lub ntiaj teb ntawm cov khoom me me thiab cov qauv, ua rau muaj ntau daim ntawv thov thev naus laus zis tshiab. Cov hu ua superconductors, uas tso cai rau kev ua cov ntaub ntawv thiab cov cim raws li cov kev cai ntawm quantum mechanics, raug suav hais tias yog cov khoom cog lus rau kev ua tiav cov khoos phis tawj quantum. Txawm li cas los xij, qhov taw tes ntawm superconducting nanostructures yog tias lawv tsuas yog ua haujlwm ntawm qhov kub qis heev thiab yog li ntawd nyuaj rau coj mus rau hauv cov ntawv thov siv. googletag.cmd.push(function() { googletag.display('div-gpt-ad-1449240174198-2′); });
Cov kws tshawb fawb ntawm University of Münster thiab Forschungszentrum Jülich tam sim no, thawj zaug, tau ua qauv qhia txog qhov hu ua kev ntsuas zog hauv nanowires ua los ntawm cov superconductors kub siab - piv txwv li superconductors, uas qhov kub siab dua hauv qab uas cov teebmeem quantum mechanical predominant. Lub superconducting nanowire ces xav tias tsuas yog xaiv cov xeev zog uas tuaj yeem siv los encode cov ntaub ntawv. Hauv cov superconductors kub siab, cov kws tshawb fawb kuj tau pom thawj zaug qhov kev nqus ntawm ib lub photon, ib lub teeb me me uas ua haujlwm xa cov ntaub ntawv.
"Ntawm ib sab tes, peb cov txiaj ntsig tuaj yeem pab txhawb rau kev siv cov thev naus laus zis txias yooj yim hauv cov thev naus laus zis quantum yav tom ntej, thiab ntawm qhov tod tes, lawv muab rau peb cov kev nkag siab tshiab kiag li rau cov txheej txheem tswj hwm cov xeev superconducting thiab lawv cov dynamics, uas tseem tsis tau nkag siab," hais tias tus thawj coj kev tshawb fawb Jun. Prof. Carsten Schuck los ntawm Lub Tsev Kawm Ntawv ntawm Physics ntawm Münster University. Yog li ntawd, cov txiaj ntsig yuav tseem ceeb rau kev tsim cov hom thev naus laus zis computer tshiab. Kev tshawb fawb tau luam tawm hauv phau ntawv xov xwm Nature Communications.
Cov kws tshawb fawb tau siv cov superconductors ua los ntawm cov ntsiab lus yttrium, barium, tooj liab oxide thiab oxygen, lossis YBCO luv luv, uas lawv tau tsim ob peb lub xov hlau nyias nyias nanometer. Thaum cov qauv no ua hluav taws xob tam sim no, lub cev dynamics hu ua 'phase slips' tshwm sim. Hauv cov ntaub ntawv ntawm YBCO nanowires, kev hloov pauv ntawm qhov ceev ntawm tus neeg nqa khoom ua rau muaj kev hloov pauv hauv supercurrent. Cov kws tshawb fawb tau tshawb xyuas cov txheej txheem hauv nanowires ntawm qhov kub qis dua 20 Kelvin, uas sib raug rau rho tawm 253 degrees Celsius. Ua ke nrog kev xam qauv, lawv tau ua pov thawj txog kev ntsuas ntawm lub xeev zog hauv nanowires. Qhov kub uas cov xov hlau nkag mus rau hauv lub xeev quantum tau pom ntawm 12 txog 13 Kelvin - qhov kub ntau pua npaug siab dua qhov kub uas xav tau rau cov ntaub ntawv siv feem ntau. Qhov no ua rau cov kws tshawb fawb tsim cov resonators, piv txwv li oscillating systems tuned rau cov zaus tshwj xeeb, nrog lub neej ntev dua thiab kom tswj tau cov xeev quantum mechanical ntev dua. Qhov no yog qhov yuav tsum tau ua ua ntej rau kev txhim kho mus sij hawm ntev ntawm cov khoos phis tawj quantum loj dua.
Cov khoom tseem ceeb ntxiv rau kev tsim cov thev naus laus zis quantum, tab sis tej zaum kuj yog rau kev kuaj mob, yog cov khoom ntes uas tuaj yeem sau npe txawm tias yog ib-photons. Carsten Schuck pawg tshawb fawb ntawm Münster University tau ua haujlwm tau ntau xyoo los tsim cov khoom ntes ib-photon raws li cov superconductors. Qhov uas twb ua haujlwm zoo ntawm qhov kub qis, cov kws tshawb fawb thoob plaws ntiaj teb tau sim ua tiav nrog cov superconductors kub siab rau ntau tshaj kaum xyoo. Hauv YBCO nanowires siv rau kev tshawb fawb, qhov kev sim no tam sim no tau ua tiav thawj zaug. "Peb cov kev tshawb pom tshiab tau qhib txoj hauv kev rau cov lus piav qhia tshiab thiab kev txhim kho thev naus laus zis," hais tias tus sau ntawv Martin Wolff los ntawm Schuck pawg tshawb fawb.
Koj tuaj yeem paub tseeb tias peb cov neeg kho xov xwm yuav saib xyuas txhua cov lus taw qhia uas xa tuaj thiab yuav ua cov haujlwm tsim nyog. Koj cov kev xav tseem ceeb rau peb.
Koj qhov chaw nyob email tsuas yog siv los qhia rau tus neeg txais paub tias leej twg xa email. Koj qhov chaw nyob lossis tus neeg txais chaw nyob yuav tsis raug siv rau lwm yam hom phiaj. Cov ntaub ntawv koj sau yuav tshwm sim hauv koj cov lus email thiab Phys.org yuav tsis khaws cia rau hauv txhua daim ntawv.
Tau txais cov xov xwm tshiab txhua lub lim tiam thiab/lossis txhua hnub xa tuaj rau koj lub inbox. Koj tuaj yeem tshem tawm koj cov ntaub ntawv txhua lub sijhawm thiab peb yuav tsis qhia koj cov ntaub ntawv rau cov neeg thib peb.
Lub xaib no siv cov ncuav qab zib los pab nrog kev taw qhia, tshuaj xyuas koj txoj kev siv peb cov kev pabcuam, thiab muab cov ntsiab lus los ntawm cov neeg thib peb. Los ntawm kev siv peb lub xaib, koj lees paub tias koj tau nyeem thiab nkag siab peb Txoj Cai Tswjfwm Ntiag Tug thiab Cov Lus Cog Tseg ntawm Kev Siv.
Lub sijhawm tshaj tawm: Plaub Hlis-07-2020