Kugwiritsa ntchito ukadaulo wa quantum microwave photonics

Kugwiritsa ntchito kwantumuukadaulo wa ma microwave photonics

Kuzindikira chizindikiro chofooka
Chimodzi mwa zinthu zabwino kwambiri zomwe zimagwiritsidwa ntchito pa ukadaulo wa quantum microwave photonics ndi kuzindikira zizindikiro zofooka kwambiri za microwave/RF. Pogwiritsa ntchito njira imodzi yodziwira photon, machitidwewa ndi osavuta kumva kuposa njira zachikhalidwe. Mwachitsanzo, ofufuza awonetsa njira ya quantum microwave photonic yomwe imatha kuzindikira zizindikiro zotsika ngati -112.8 dBm popanda kukulitsa kwamagetsi. Kuzindikira kwakukulu kumeneku kumapangitsa kuti ikhale yoyenera kugwiritsa ntchito monga kulumikizana kwakuya.

Zojambula za mu microwavekukonza zizindikiro
Ma microwave a quantum photonics amagwiritsanso ntchito ntchito zokonza ma signal a bandwidth apamwamba monga kusintha kwa gawo ndi kusefa. Pogwiritsa ntchito chinthu chowala chogawanitsa ndikusintha kutalika kwa kuwala, ofufuzawo adawonetsa kuti gawo la RF limasuntha mpaka ma bandwidth osefa a 8 GHz mpaka 8 GHz. Chofunika kwambiri, mawonekedwe awa onse amakwaniritsidwa pogwiritsa ntchito zida zamagetsi za 3 GHz, zomwe zikuwonetsa kuti magwiridwe antchito amaposa malire a bandwidth achikhalidwe.

Kujambula nthawi komwe sikuli m'deralo
Mphamvu imodzi yosangalatsa yomwe imabwera chifukwa cha kusokonekera kwa quantum ndi kuyerekezera ma frequency osakhala am'deralo ndi nthawi. Njirayi imatha kuyerekeza ma spectrum a gwero la single-photon lomwe limapopedwa ndi mafunde osalekeza kupita ku nthawi yomwe ili kutali. Dongosololi limagwiritsa ntchito ma photon awiri olumikizidwa momwe kuwala kumodzi kumadutsa mu spectral fyuluta ndipo inayo imadutsa mu dispersive element. Chifukwa cha kudalira ma frequency a enclosed photons, njira yosefera ya spectral imawonetsedwa osati m'deralo ku nthawi yomwe ili.
Chithunzi 1 chikuwonetsa lingaliro ili:

Njira iyi imatha kupangitsa kuti kuwala kukhale kosinthasintha popanda kugwiritsa ntchito mwachindunji gwero la kuwala lomwe layesedwa.

Kuzindikira kopanikizika
Kwantumumicrowave opticalukadaulo umaperekanso njira yatsopano yodziwira zizindikiro za broadband mokakamizidwa. Pogwiritsa ntchito kusakhazikika komwe kumachitika mu kuzindikira kwa quantum, ofufuza awonetsa njira yodziwira ya quantum mokakamizidwa yomwe imatha kuchira.10 GHz RFma spectra. Dongosololi limasinthasintha chizindikiro cha RF ku mkhalidwe wa polarization wa coherent photon. Kuzindikira kwa single-photon kumapereka matrix yachilengedwe yoyezera mwachisawawa kuti izindikire mokakamizidwa. Mwanjira imeneyi, chizindikiro cha broadband chikhoza kubwezeretsedwanso pa Yarnyquist sampling rate.

Kugawa kiyi ya Quantum
Kuwonjezera pa kupititsa patsogolo ntchito zachikhalidwe za microwave photonic, ukadaulo wa quantum ungalimbikitsenso njira zolumikizirana za quantum monga quantum key distribution (QKD). Ofufuzawa adawonetsa subcarrier multiplex quantum key distribution (SCM-QKD) mwa kuchulukitsa ma microwave photons subcarrier pa quantum key distribution (QKD). Izi zimalola ma quantum keys angapo odziyimira pawokha kuti afalitsidwe kudzera mu kuwala kamodzi, motero kumawonjezera mphamvu ya spectral.
Chithunzi 2 chikuwonetsa lingaliro ndi zotsatira zoyesera za dongosolo la SCM-QKD lonyamula zinthu ziwiri:

Ngakhale ukadaulo wa quantum microwave photonics uli ndi chiyembekezo, palinso zovuta zina:
1. Kuthekera kochepa kwa ntchito yeniyeni: Dongosolo lamakono limafuna nthawi yambiri yosonkhanitsa kuti lipangenso chizindikiro.
2. Kuvuta kuthana ndi zizindikiro zophulika/zokha: Chiwerengero cha kumangidwanso kwa chizindikirocho chimalepheretsa kugwiritsidwa ntchito kwake ku zizindikiro zosabwerezabwereza.
3. Sinthani kukhala mawonekedwe enieni a mafunde a microwave: Njira zina zimafunika kuti musinthe histogram yomangidwanso kukhala mawonekedwe a mafunde ogwiritsidwa ntchito.
4. Makhalidwe a chipangizo: Kuphunzira kwina kwa momwe zipangizo za quantum ndi microwave photonic zimagwirira ntchito m'makina osakanikirana kukufunika.
5. Kuphatikiza: Machitidwe ambiri masiku ano amagwiritsa ntchito zigawo zazikulu zogawanika.

Pofuna kuthana ndi mavutowa ndikupititsa patsogolo ntchitoyi, pali njira zingapo zabwino zofufuzira zomwe zikubwera:
1. Pangani njira zatsopano zogwiritsira ntchito zizindikiro nthawi yeniyeni komanso kuzindikira kamodzi.
2. Fufuzani mapulogalamu atsopano omwe amagwiritsa ntchito mphamvu zambiri, monga kuyeza kwa madzi a microsphere.
3. Yesetsani kuzindikira ma photon ndi ma elekitironi ophatikizidwa kuti muchepetse kukula ndi zovuta.
4. Phunzirani momwe kuwala ndi zinthu zina zimagwirira ntchito bwino m'ma circuits a microwave photonic omwe amaphatikizidwa.
5. Phatikizani ukadaulo wa photon wa microwave wa quantum ndi ukadaulo wina watsopano wa quantum.