Ubuchwepheshe be-optical be-microwave ye-quantum

I-Quantumi-microwave opticalubuchwepheshe
Ubuchwepheshe bokubona be-microwavesekuphenduke insimu enamandla, ehlanganisa izinzuzo zobuchwepheshe be-optical kanye ne-microwave ekucubungulweni kwesignali, ukuxhumana, ukuzwa kanye nezinye izici. Kodwa-ke, izinhlelo ze-photonic ze-microwave ezivamile zibhekene nemikhawulo ethile ebalulekile, ikakhulukazi maqondana ne-bandwidth kanye nokuzwela. Ukuze banqobe lezi zinselele, abacwaningi baqala ukuhlola i-quantum microwave photonics - insimu entsha ethokozisayo ehlanganisa imiqondo yobuchwepheshe be-quantum kanye ne-microwave photonics.

Izisekelo zobuchwepheshe be-optical be-quantum microwave
Ingqikithi yobuchwepheshe be-quantum microwave optical iwukuthatha indawo ye-optical yendabukoumshini wokuthola izithombekuisixhumanisi se-photon ye-microwavenge-single photon photodetector ezwela kakhulu. Lokhu kuvumela uhlelo ukuthi lusebenze emazingeni aphansi kakhulu wamandla okukhanya, ngisho nasezingeni le-single-photon, kuyilapho futhi kungenzeka lwandise i-bandwidth.
Izinhlelo ze-photon ze-microwave ze-quantum ezijwayelekile zifaka: 1. Imithombo ye-photon eyodwa (isb., ama-laser ancishisiwe 2.I-modulator ye-electro-opticukufaka ikhodi yezibonakaliso ze-microwave/RF 3. Ingxenye yokucubungula isignali ye-optical 4. Izitholi ze-photon eyodwa (isb. Izitholi ze-nanowire ze-Superconducting) 5. Amadivayisi kagesi e-single photon Counting (TCSPC) ancike esikhathini
Isibalo 1 sibonisa ukuqhathanisa phakathi kwezixhumanisi ze-photon ze-microwave zendabuko kanye nezixhumanisi ze-photon ze-microwave ze-quantum:

Umehluko oyinhloko ukusetshenziswa kwezitholi ze-photon eyodwa kanye namamojula e-TCSPC esikhundleni sama-photodiode asheshayo. Lokhu kwenza kube lula ukuthola izimpawu ezibuthakathaka kakhulu, kuyilapho ngethemba ukuthi kuzodlula imingcele yezitholi ze-photo ezivamile.

Uhlelo lokuthola i-photon eyodwa
Uhlelo lokuthola i-photon eyodwa lubaluleke kakhulu ezinhlelweni ze-photon ze-quantum microwave. Umgomo wokusebenza umi kanje: 1. Isignali ye-trigger yesikhathi esivunyelaniswe nesignali elinganisiwe ithunyelwa kumojuli ye-TCSPC. 2. I-single photon detector ikhipha uchungechunge lwama-pulse amele ama-photon atholiwe. 3. Imojuli ye-TCSPC ilinganisa umehluko wesikhathi phakathi kwesignali ye-trigger kanye ne-photon ngayinye etholiwe. 4. Ngemva kwama-loop amaningana e-trigger, i-histogram yesikhathi sokuthola iyasungulwa. 5. I-histogram ingakha kabusha i-waveform yesignali yokuqala. Ngokwezibalo, kungaboniswa ukuthi amathuba okuthola i-photon ngesikhathi esithile alingana namandla okukhanya ngaleso sikhathi. Ngakho-ke, i-histogram yesikhathi sokuthola ingamelela ngokunembile i-waveform yesignali elinganisiwe.

Izinzuzo ezibalulekile zobuchwepheshe be-optical be-quantum microwave
Uma kuqhathaniswa nezinhlelo ze-optical ze-microwave zendabuko, i-quantum microwave photonics inezinzuzo eziningana ezibalulekile: 1. Ukuzwela okuphezulu kakhulu: Ithola izimpawu ezibuthakathaka kakhulu kuze kufike ezingeni le-photon eyodwa. 2. Ukwanda kwe-bandwidth: akukhawulelwe yi-bandwidth ye-photodetector, kodwa kuthinteka kuphela yi-timing jitter ye-single photon detector. 3. Ukuthuthukiswa kokulwa nokuphazamiseka: Ukwakhiwa kabusha kwe-TCSPC kungahlunga izimpawu ezingavalelwanga ku-trigger. 4. Umsindo ophansi: Gwema umsindo obangelwa ukutholwa kwe-photoelectric yendabuko kanye nokukhulisa.