Ukusetshenziswa kobuchwepheshe be-quantum microwave photonics

Ukusetshenziswa kwe-quantumubuchwepheshe be-photonics be-microwave

Ukutholwa kwesignali ebuthakathaka
Esinye sezicelo esithembisayo kakhulu sobuchwepheshe be-quantum microwave photonics ukutholwa kwamasiginali e-microwave/RF ebuthaka kakhulu. Ngokusebenzisa ukutholwa kwe-photon eyodwa, lezi zinhlelo zizwela kakhulu kunezindlela zendabuko. Isibonelo, abacwaningi babonise uhlelo lwe-quantum microwave photonic olukwazi ukubona amasignali aphansi njenge -112.8 dBm ngaphandle kokukhulisa i-electronic. Lokhu kuzwela okuphezulu kakhulu kuyenza ilungele izinhlelo zokusebenza ezifana nokuxhumana emkhathini ojulile.

I-Microwave Photonicsukucubungula isignali
I-Quantum microwave photonics iphinde isebenzise imisebenzi yokucubungula isignali yomkhawulokudonsa ophezulu njengokushintsha kwesigaba nokuhlunga. Ngokusebenzisa i-dispersive Optical element kanye nokulungisa ubude beza beza bokukhanya, abacwaningi babonise iqiniso lokuthi isigaba se-RF sishintsha sifike ku-8 GHz RF yokuhlunga komkhawulokudonsa kufika ku-8 GHz. Okubalulekile, lezi zici zonke zifinyelelwa kusetshenziswa i-3 GHz electronics, okubonisa ukuthi ukusebenza kweqa imikhawulo evamile yomkhawulokudonsa.

Imvamisa okungeyona eyendawo yokumepha isikhathi
Ikhono elilodwa elithokozisayo elethwa ukugoqana kwe-quantum ukuqoshwa kwemvamisa okungeyona eyendawo ngokuya kwesikhathi. Le ndlela yokwenza imephu i-spectrum yomthombo we-photon eyodwa ephonswe ngamagagasi eqhubekayo ukuya esizindeni sesikhathi endaweni ekude. Isistimu isebenzisa amapheya e-photon abambene lapho ugongolo olulodwa ludlula kusihlungi se-spectral kanti enye idlula into ehlakazayo. Ngenxa yokuncika kwemvamisa yama-photon abambezelekile, imodi yokuhlunga i-spectral ifakwe imephu engeyona eyendawo esizindeni sesikhathi.
Umfanekiso 1 ubonisa lo mqondo:

Le ndlela ingakwazi ukuzuza ukulinganisa kwe-spectral okuguquguqukayo ngaphandle kokukhohlisa ngokuqondile umthombo wokukhanya olinganiselwe.

Inzwa ecindezelwe
I-Quantumi-microwave opticalubuchwepheshe buhlinzeka ngendlela entsha yokuzwa okucindezelwe kwamasignali e-broadband. Besebenzisa ukungahleliwe okukhona ekutholweni kwe-quantum, abacwaningi babonise isistimu yezinzwa ecindezelwe ye-quantum ekwazi ukululama.10 GHz RFi-spectra. Uhlelo lumodela isignali ye-RF esimweni sokwehlukanisa se-photon ehlangene. Ukutholwa kwesithombe esisodwa bese kunikeza i-matrix yokulinganisa engahleliwe yemvelo yokuzwa okucindezelwe. Ngale ndlela, isignali ye-broadband ingabuyiselwa ngesilinganiso sesampula se-Yarnyquist.

Ukusabalalisa kokhiye we-Quantum
Ngokungeziwe ekuthuthukiseni izinhlelo zokusebenza ze-microwave photonic zendabuko, ubuchwepheshe be-quantum bungaphinda buthuthukise izinhlelo zokuxhumana ze-quantum ezifana nokusabalalisa ukhiye we-quantum (QKD). Abacwaningi bakhombise i-subcarrier multiplex quantum key distribution (SCM-QKD) ngokuphindaphinda i-microwave photons subcarrier ohlelweni lokusabalalisa ukhiye we-quantum (QKD). Lokhu kuvumela okhiye abaningi abazimele be-quantum ukuthi badluliselwe ngobude obubodwa bokukhanya, ngaleyo ndlela kwandise ukusebenza kahle kwe-spectral.
Umfanekiso 2 ubonisa umqondo nemiphumela yokuhlola yesistimu ye-SCM-QKD yezinkampani ezimbili:

Yize ubuchwepheshe be-quantum microwave photonics buthembisa, kusenezinselelo ezithile:
1. Amandla esikhathi sangempela anomkhawulo: Isistimu yamanje idinga isikhathi esiningi sokuqongelela ukuze yakhe kabusha isignali.
2. Ubunzima bokubhekana namasignali okuqhuma/okukodwa: Imvelo yezibalo yokwakha kabusha ikhawulela ukusebenza kwayo kumasignali angaphindi.
3. Guqulela ku-microwave waveform yangempela: Kudingeka izinyathelo ezengeziwe ukuze kuguqulwe i-histogram eyakhiwe kabusha ibe i-waveform esebenzisekayo.
4. Izici zedivayisi: Kudingeka ucwaningo olwengeziwe lokuziphatha kwamadivayisi we-quantum ne-microwave photonic kumasistimu ahlanganisiwe.
5. Ukuhlanganisa: Amasistimu amaningi namuhla asebenzisa izingxenye ezinkulu ezihlukene.

Ukuze kubhekwane nalezi zinselelo futhi kuthuthukiswe umkhakha, kuvela izinkomba zocwaningo ezimbalwa ezithembisayo:
1. Yakha izindlela ezintsha zokucubungula isignali ngesikhathi sangempela kanye nokutholwa okukodwa.
2. Hlola izinhlelo zokusebenza ezintsha ezisebenzisa ukuzwela okuphezulu, okufana nesilinganiso se-liquid microsphere.
3. Phishekela ukufezeka kwama-photons nama-electron ahlanganisiwe ukuze unciphise usayizi nobunkimbinkimbi.
4. Funda ukusebenzisana okuthuthukisiwe kwe-light-matter kumasekhethi ahlanganisiwe e-quantum microwave photonic.
5. Hlanganisa ubuchwepheshe be-quantum microwave photon nobunye ubuchwepheshe be-quantum obusafufusa.