Ukuxhumana okubethelwe kwe-Quantum
Ukuxhumana okuyimfihlo kwe-Quantum, okwakwaziwa nangokuthi ukusatshalaliswa kokhiye we-quantum, iyona ndlela yokuxhumana kuphela efakazelwe ukuthi ivikeleke ngokuphelele ezingeni lamanje lengqondo yomuntu. Umsebenzi wawo uwukusabalalisa ngamandla ukhiye phakathi kuka-Alice no-Bob ngesikhathi sangempela ukuze kuqinisekiswe ukuvikeleka okuphelele kokuxhumana.
Ukuxhumana okuvikelekile okungokwesiko kuwukukhetha kusengaphambili futhi unikeze ukhiye lapho u-Alice no-Bob behlangana, noma ukuthumela umuntu okhethekile ukuthi alethe ukhiye. Le ndlela ayilungile futhi iyabiza, futhi ivame ukusetshenziswa ezimeni ezikhethekile njengokuxhumana phakathi komkhumbi-ngwenya kanye nesisekelo. Ukusabalalisa ukhiye we-Quantum kungasungula isiteshi se-quantum phakathi kuka-Alice no-Bob, futhi kwabele okhiye ngesikhathi sangempela ngokuvumelana nezidingo. Uma ukuhlaselwa noma ukulalela kwenzeka ngesikhathi sokusatshalaliswa kokhiye, bobabili u-Alice no-Bob bangakwazi ukukubona.
Ukusatshalaliswa kokhiye we-Quantum kanye nokutholwa kwe-photon eyodwa kuwubuchwepheshe obubalulekile bokuxhumana okuphephile kwe-quantum. Eminyakeni yamuva nje, amanyuvesi amakhulu nezikhungo zocwaningo zenze inani elikhulu lezifundo zokuhlola kubuchwepheshe obubalulekile bokuxhumana kwe-quantum.Amamojula we-Electro-opticfuthiama-lasers wobubanzi bomugqa emincaneezithuthukiswe ngokuzimela inkampani yethu ziye zasetshenziswa kabanzi quantum key distribution systems. Thatha ukusabalalisa okuqhubekayo kokhiye we-quantum oguquguqukayo njengesibonelo, njengoba kuboniswe esithombeni esilandelayo.
Ngokwalezi zimiso ezingenhla, i-electro-optical modulator (AM, PM) iyingxenye ebalulekile yohlelo lokuhlola ukhiye wokusabalalisa ukhiye we-quantum, olunamandla okushintsha i-amplitude noma isigaba senkundla ye-optical, ukuze isignali yokufaka ikwazi isakazwa nge-quantum ye-optical. Uhlelo ludinga imojuli yokuqina kokukhanya ukuthi ibe nesilinganiso esiphezulu sokunyamalala kanye nokulahlekelwa kokufaka okuphansi ukuze kukhiqizwe isilinganiso esiphezulu sokunyamalala kwesiginali yokukhanya kwepulsed.
| Imikhiqizo ehlobene | Imodeli nencazelo |
| I-laser yobubanzi obuncane bomugqa | I-laser yochungechunge lwe-ROF-NLS, i-RIO fibre laser, i-NKT fiber laser |
| umthombo wokukhanya we-ns pulse (laser) | I-ROF-PLS yochungechunge lomthombo wokukhanya we-pulse, i-trigger yangaphakathi nangaphandle ngokuzithandela, ububanzi be-pulse kanye nemvamisa yokuphindaphinda iyalungiseka. |
| I-intensity modulator | Amamojula ochungechunge we-ROF-AM, afika ku-20GHz bandwidth, isilinganiso sokuqothulwa okuphezulu kufika ku-40dB |
| I-modulator yesigaba | I-modulator yochungechunge lwe-ROF-PM, umkhawulokudonsa ojwayelekile ongu-12GHz, uhhafu we-wave voltage wehle ufike ku-2.5V |
| I-Microwave amplifier | I-ROF-RF yochungechunge lwe-analog amplifier, isekela i-10G, i-20G, i-40G yokukhulisa isignali ye-microwave, ye-electro-optical modulator drive |
| I-Photodetector elinganiselayo | Uchungechunge lwe-ROF-BPR, isilinganiso esiphezulu sokunqatshwa kwemodi evamile, umsindo ophansi |
Isikhathi sokuthumela: Sep-09-2024