Ubuchwepheshe be-Quantum microwave optical

I-Quantumi-microwave opticalubuchwepheshe
Ubuchwepheshe be-Microwave opticalisibe insimu enamandla, ehlanganisa izinzuzo zobuchwepheshe be-optical kanye ne-microwave ekucubunguleni isignali, ukuxhumana, ukuzwa kanye nezinye izici. Kodwa-ke, izinhlelo ezivamile ze-microwave photonic zibhekana nemikhawulo ethile ebalulekile, ikakhulukazi mayelana nomkhawulokudonsa nokuzwela. Ukuze banqobe lezi zinselele, abacwaningi sebeqala ukuhlola izithombe ze-quantum microwave - inkambu entsha ethokozisayo ehlanganisa imiqondo yobuchwepheshe be-quantum ne-microwave photonics.

Okuyisisekelo kobuchwepheshe be-quantum microwave optical
Umnyombo wobuchwepheshe be-quantum microwave optical ukuthatha indawo ye-optical yendabukoi-photodetectorkweisixhumanisi sesithombe se-microwavenge-high-sensitivity yesithombe esisodwa se-photon. Lokhu kuvumela isistimu ukuthi isebenze ngamaleveli wamandla okukhanya aphansi kakhulu, ngisho naphansi kuze kufike ezingeni le-single-photon, kuyilapho futhi ikwandisa umkhawulokudonsa.
Amasistimu ajwayelekile we-quantum microwave photon afaka: 1. Imithombo ye-photon eyodwa (isb, ama-laser attenuated 2.Imodeli ye-Electro-opticwokufaka amasiginali we-microwave/RF 3. Ingxenye yokucubungula isignali yokubona4. Izitholi ze-photon ezizodwa (isb. Izithonjana ze-Superconducting nanowire) 5. Izisetshenziswa zikagesi ezincike ngesikhathi esisodwa se-photon Counting (TCSPC)
Umfanekiso 1 ubonisa ukuqhathanisa phakathi kwezixhumanisi zesithombe ze-microwave zendabuko nezixhumanisi ze-quantum microwave photon:

Umehluko oyinhloko ukusetshenziswa kwezithonjana ze-photon eyodwa namamojula we-TCSPC esikhundleni sama-photodiode anesivinini esikhulu. Lokhu kuvumela ukutholwa kwamasiginali abuthaka kakhulu, kuyilapho ngethemba ukuthi iphusha umkhawulokudonsa ngaphezu kwemikhawulo yezithonjana zezithombe zendabuko.

Isikimu sokuthola isithombe esisodwa
Uhlelo lokutholwa kwe-photon olulodwa lubaluleke kakhulu ezinhlelweni ze-quantum microwave photon. Umgomo wokusebenza umi kanje: 1. Isignali ye-trigger yezikhathi ezithile evunyelaniswe nesignali elinganisiwe ithunyelwa kumojula ye-TCSPC. 2. Umtshina we-photon owodwa ukhipha uchungechunge lwama-pulses amele ama-photon atholiwe. 3. Imojula ye-TCSPC ikala umehluko wesikhathi phakathi kwesiginali ye-trigger ne-photon ngayinye etholiwe. 4. Ngemuva kwama-trigger loops ambalwa, i-histogram yesikhathi sokuthola iyasungulwa. 5. I-histogram ingakwazi ukwakha kabusha i-waveform yesiginali yoqobo.Ngokwezibalo, ingaboniswa ukuthi amathuba okuthola i-photon ngesikhathi esinikeziwe ahambisana namandla okubona ngaleso sikhathi. Ngakho-ke, i-histogram yesikhathi sokuthola ingamela ngokunembile i-waveform yesignali elinganisiwe.

Izinzuzo ezibalulekile ze-quantum microwave optical technology
Uma kuqhathaniswa namasistimu okukhanya e-microwave okuvamile, i-quantum microwave photonics inezinzuzo ezimbalwa ezibalulekile: 1. Ukuzwela okuphezulu kakhulu: Ithola amasignali abuthakathaka ngokwedlulele kuze kufike ezingeni elilodwa le-photon. 2. Ukwenyuka komkhawulokudonsa: akunqunyelwe umkhawulokudonsa we-photodetector, kuthintwa kuphela i-jitter yesikhathi yomtshina owodwa we-photon. 3. Ukuvimbela ukuphazamiseka okuthuthukisiwe: Ukwakhiwa kabusha kwe-TCSPC kungahlunga amasiginali angakhiyiwe kusibangeli. 4. Umsindo ophansi: Gwema umsindo obangelwa ukutholwa nokukhulisa ugesi wendabuko.