Txoj kev loj hlob ntawm quantum computer uas tuaj yeem daws teeb meem, uas cov khoos phis tawj classic tsuas tuaj yeem daws tau nrog kev siv zog loj lossis tsis yog tag nrho - qhov no yog lub hom phiaj tam sim no tab tom nrhiav los ntawm ntau pawg tshawb fawb thoob ntiaj teb. Yog vim li cas: Quantum teebmeem, uas tshwm sim los ntawm lub ntiaj teb no ntawm cov khoom me me thiab cov qauv, ua kom muaj ntau yam kev siv thev naus laus zis tshiab. Yog li hu ua superconductors, uas tso cai rau kev ua cov ntaub ntawv thiab cov teeb liab raws li txoj cai ntawm quantum mechanics, raug suav tias yog cov khoom cog lus rau kev paub txog quantum computers. Lub ntsiab lus tseem ceeb ntawm superconducting nanostructures, txawm li cas los xij, yog tias lawv tsuas yog ua haujlwm ntawm qhov kub thiab txias heev thiab yog li nyuaj rau coj mus rau hauv kev siv tswv yim. 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 pom dab tsi hu ua lub zog quantization nyob rau hauv nanowires ua los ntawm high-temperature superconductors - piv txwv li superconductors, nyob rau hauv uas qhov kub thiab txias yog siab hauv qab no uas quantum mechanical teebmeem predominate. Lub superconducting nanowire tom qab ntawd tsuas yog xaiv lub zog uas tuaj yeem siv los encode cov ntaub ntawv. Nyob rau hauv high-temperature superconductors, cov kws tshawb fawb kuj tseem tuaj yeem soj ntsuam thawj zaug ntawm kev nqus ntawm ib qho photon, lub teeb particle uas ua haujlwm rau kev xa cov ntaub ntawv.
"Ntawm ib sab, peb cov txiaj ntsig tuaj yeem pab txhawb rau kev siv thev naus laus zis thev naus laus zis hauv quantum thev naus laus zis yav tom ntej, thiab ntawm qhov tod tes, lawv muab peb cov kev nkag siab tshiab rau cov txheej txheem tswj hwm lub xeev superconducting thiab lawv cov dynamics, uas tseem muaj. tsis to taub,” hais txog kev kawm thawj coj Jun. Prof. Carsten Schuck los ntawm lub koom haum ntawm Physics ntawm Münster University. Yog li ntawd, cov txiaj ntsig yuav muaj feem cuam tshuam rau kev txhim kho hom tshiab ntawm kev siv tshuab computer. Txoj kev tshawb no tau luam tawm nyob rau hauv phau ntawv journal Nature Communications.
Cov kws tshawb fawb siv superconductors ua los ntawm cov ntsiab lus yttrium, barium, tooj liab oxide thiab oxygen, los yog YBCO luv luv, los ntawm uas lawv fabricated ob peb nanometer nyias nyob ntawm tej. Thaum cov qauv no ua hluav taws xob tam sim no lub cev muaj zog hu ua 'phase slips' tshwm sim. Nyob rau hauv cov ntaub ntawv ntawm YBCO nanowires, kev hloov pauv ntawm tus nqi thauj khoom ceev ua rau muaj kev hloov pauv hauv cov supercurrent. Cov kws tshawb fawb tau tshawb xyuas cov txheej txheem hauv nanowires ntawm qhov kub qis dua 20 Kelvin, uas sib haum mus rau rho tawm 253 degrees Celsius. Hauv kev sib xyaw ua ke nrog cov qauv kev suav, lawv tau ua kom pom qhov muaj nuj nqis ntawm lub zog hauv cov nanowires. Qhov kub ntawm cov xov hlau nkag mus rau hauv lub xeev quantum tau pom nyob rau ntawm 12 txog 13 Kelvin - qhov kub thiab txias ntau pua lub sij hawm ntau dua li qhov kub ntawm cov khoom siv ib txwm siv. Qhov no tau ua rau cov kws tshawb fawb los tsim cov resonators, piv txwv li oscillating systems tuned rau cov frequencies tshwj xeeb, nrog rau lub neej ntev dua thiab tswj cov quantum mechanical xeev kom ntev dua. Qhov no yog qhov yuav tsum tau ua ua ntej rau kev txhim kho mus sij hawm ntev ntawm puas tau loj dua quantum computers.
Cov khoom tseem ceeb ntxiv rau kev txhim kho quantum thev naus laus zis, tab sis tseem muaj peev xwm rau kev kuaj mob, yog cov cuab yeej kuaj pom uas tuaj yeem sau npe txawm tias ib leeg-photons. Carsten Schuck pawg tshawb fawb ntawm Münster University tau ua haujlwm tau ntau xyoo los tsim cov khoom siv yees duab ib leeg raws li cov khoom siv hluav taws xob. Dab tsi twb ua haujlwm zoo ntawm qhov kub thiab txias, cov kws tshawb fawb thoob plaws ntiaj teb tau sim ua kom tiav nrog cov khoom siv hluav taws xob kub kub rau ntau tshaj kaum xyoo. Hauv YBCO nanowires siv rau txoj kev tshawb no, qhov kev sim no tau ua tiav thawj zaug. "Peb qhov kev tshawb pom tshiab tau qhib txoj hauv kev rau cov kev tshawb fawb tshiab uas tuaj yeem tshawb xyuas qhov kev piav qhia thiab kev tsim kho thev naus laus zis," said co-sau Martin Wolff los ntawm pab pawg tshawb fawb Schuck.
Koj tuaj yeem paub tseeb tias peb cov kws kho mob saib xyuas txhua qhov kev tawm tswv yim xa thiab yuav ua qhov tsim nyog. Koj lub tswv yim tseem ceeb rau peb.
Koj tus email chaw nyob tsuas yog siv los qhia rau tus neeg tau txais kev paub tias leej twg xa email. Tsis yog koj qhov chaw nyob lossis tus neeg txais qhov chaw nyob yuav tsis raug siv rau lwm lub hom phiaj. Cov ntaub ntawv koj nkag mus yuav tshwm sim hauv koj cov lus e-mail thiab tsis khaws cia los ntawm Phys.org hauv ib daim ntawv.
Tau txais cov hloov tshiab txhua lub lim tiam thiab / lossis txhua hnub xa mus rau koj lub inbox. Koj tuaj yeem tshem tawm txhua lub sijhawm thiab peb yuav tsis qhia koj cov ntsiab lus rau peb tog.
Lub vev xaib no siv cov ncuav qab zib los pab nrog kev taw qhia, txheeb xyuas koj qhov kev siv peb cov kev pabcuam, thiab muab cov ntsiab lus los ntawm peb tog. Los ntawm kev siv peb lub xaib, koj lees paub tias koj tau nyeem thiab nkag siab txog peb Txoj Cai Tswjfwm Ntiag Tug thiab Cov Cai Siv.
Post lub sij hawm: Apr-07-2020