UC Santa cov kws tshawb nrhiav tau tsim cov kev cog lus, tus nqi qis laser uas muaj kev ua tau zoo ntawm kev ntsuas-ntsuas-teev cov tshuab. Nws siv Rubdium atoms thiab kawm tiav cov txuj ci sib xyaw ua ke los pab cov ntawv thov, kev hnov thiab ib puag ncig lub luag hauj lwm zoo nkauj.
Lasers yog qhov tseem ceeb rau kev sim uas yuav tsum muaj ultra-kho atomic ntsuas thiab nruab nrab atom interference thiab Quantum Gates. Qhov tseem ceeb rau cov txiaj ntsig ntawm lasers yog lawv txoj kev coj dawb huv, uas yog qhov kev tawm ntawm lub teeb ntawm tsuas yog ib qho xim xwb, lossis ntau zaus. Niaj hnub no, ua tiav cov roj ela-qes
Tab sis yog dab tsi yog tias cov ntawv thov atomic no tuaj yeem dim ntawm cov lab thiab lub rooj zaum txhawm? Nov yog lub zeem muag kev tsav tsheb hauv chav ua haujlwm ntawm Daniel Brandaryhal, tus xibfwb ntawm kev ua haujlwm ntawm UC Santa lub siab-precision lasers nyob rau hauv lub teeb ci ntsa iab, Handheld li.
"Cov lasers me me no yuav ua kom cov kev daws teeb laser laser rau cov khoom siv, thiab cov chaw kawm tiav hauv Blumental's lab. "Qhov no yuav cuam tshuam rau cov lus siv thev naus laus zis xws li Quantum suav siv cov lej nruab nrab thiab ua kom zoo li txias-atom Quantum thiab cov malimeters."
Nyob rau hauv ib daim ntawv luam tawm nyob rau hauv phau ntawv xov xwm kev tshawb fawb, Isichenko thiab lawv pab pawg paub ultra-locked {}} nanometer laser hauv txoj kev taw qhia no. Cov kws tshawb nrhiav hais tias cov cuab yeej, uas yog hais txog qhov loj me, tuaj yeem outperform cov nqaim nqaim-kab} n} nm lasers ntawm ib feem kev tsim cov nqi thiab chaw.
Rubbium atoms tau raug xaiv rau lub laser vim tias lawv tau muaj cov khoom siv zoo uas ua rau lawv zoo rau ntau yam kev siv nyiaj siab. Kev ruaj ntseg ntawm lawv D2 Optical hloov ua rau lawv zoo tagnrho rau atomic lub moos; Cov atoms 'rhiab tseem ua rau lawv xaiv tau rau sensors thiab txias-atom physics. Los ntawm kev hla lub laser los ntawm vapor ntawm Rubidium atoms uas ua haujlwm ua laser, cov neeg nyob ze-infrared siv rau ntawm ib qho chaw ruaj khov kho atomic.
"Koj siv kab hloov atomic los cuab lub tshuab tawv," daim ntawv tus kws tshaj lij. "Hauv lwm lo lus, los ntawm txhav tas liaser mus rau txoj kab hloov atomic mus rau cov khoom ntawm cov khoom ntawm qhov ntawd atomities nyob rau hauv cov nqe lus ntawm kev ruaj ntseg."
Tab sis cov teeb liab liab tsis ua rau ib qho precision laser. Kom tau txais qhov zoo tshaj plaws ntawm lub teeb laser, "suab nrov" yuav tsum tau muab tshem tawm. BLATUSHAL qhia txog nws raws li txoj kev diav rawg piv rau ib qho guitar txoj hlua. "Yog tias koj ntaus ib lub c nrog txoj kev sib tw, nws yuav yog ib qho C," nws piav qhia. "Tab sis yog tias koj ntaus ib lub C nyob rau kis guitar, koj tuaj yeem hnov lwm lub suab hauv nws." Ib yam li ntawd, lub teeb laser yuav muaj cov xim sib txawv (xim), tsim cov suab nrov ntxiv "." Txhawm rau tsim cov tib zaus yuav tsum tau (hauv qhov no, ntshiab sib sib zog nqus liab teeb), lub kaw lus siv cov khoom sib txuas ntxiv kom du tawm ntawm lub teeb laser. Qhov kev sib tw rau cov kws tshawb nrhiav tau ntim tag nrho cov kev ua haujlwm no thiab kev ua tau zoo mus rau ib nti.
"Pab neeg siv ua ke ntawm kev ua lag luam laser dodiges, ua los ntawm bloudehat fideguides (ua tiav ntawm cov pa silicon nitride platform. Ua li ntawd, lawv tau ua Muaj peev xwm rov ua cov khoom siv ntawm bultype venetop tshuab {}} Raws li cov kev xeem ua ke, ntawm plaub lub rooj sib tw ua ke hauv cov khoom tseem ceeb uas zoo li suab nrov thiab Linewidth.
"Qhov tseem ceeb ntawm Linewidth tsawg yog tias peb tuaj yeem ua tiav cov lasers uas tsis muaj kev ua haujlwm lier lier liter," ichenko tau piav qhia. "Hauv qee txoj kev, tau zoo dua yog hloov kho rau cov lasers vim tias muaj kev sib koom ua ke ntawm cov lus piv txwv thiab yog li daws teeb meem hauv atomic laser teb rau ib puag ncig lawv paub, thiab lwm yam. "
Cov kab qis qis, rau txoj haujlwm no, yog sau-qis sub-hertzing laywidths, kev muaj peev xwm kov yeej lub suab nrov los ntawm ob qho chaw sab nraud thiab sab hauv.
Lwm qhov zoo ntawm cov thev naus laus zis suav nrog tus nqi-nws siv $ 50 dodes siv cov txheej txheem-ua tau zoo thiab nkag mus rau lub ntiaj teb ntawm chip tsim khoom. Txoj kev vam meej ntawm cov thev naus laus zis txhais tau tias cov kev ua tau zoo, muaj ntau yam kev sim tshuaj ob sab hauv thiab sab hauv lub sijhawm, thiab hnov cov cim tsis muaj zog, xws li kev hloov pauv ntawm kev ua kom nrawm thoob plaws ntiaj teb.
"Koj tuaj yeem tso cov twj paj nruag ntawm satellites thiab daim ntawv qhia txog kev sib tsoo thiab thoob plaws lub ntiaj teb nrog qee qhov raug," BLACTHAL tau hais. "Koj yuav paub txog teb cov lag luam thoob plaws lub ntiaj teb los ntsuas hiav txwv dej hiav txwv nce, hloov hauv cov dej hiav txwv dej, thiab av qeeg." Nws hais ntxiv: "Cov thev naus laus zis yog kev cog lus, lub zog qis, thiab lub teeb yuag, ua rau nws zoo tagnrho rau kev xa tawm hauv qhov chaw."
