Ukusetyenziswa kwe-quantumiteknoloji ye-microwave photonics
Ukufunyanwa kwesignali ebuthathaka
Enye yezona ndlela zithembisayo zobuchwepheshe be-quantum microwave photonics kukufumanisa iimpawu ze-microwave/RF ezibuthathaka kakhulu. Ngokusebenzisa ukufunyanwa kwe-photon enye, ezi nkqubo zinobuthathaka ngakumbi kuneendlela zemveli. Umzekelo, abaphandi babonise inkqubo ye-quantum microwave photonic enokufumana iimpawu eziphantsi njenge--112.8 dBm ngaphandle kokwandiswa kwe-elektroniki. Olu buntununtunu buphezulu kakhulu luyenza ifaneleke kwizicelo ezifana nonxibelelwano olujulileyo.
Iifotoniki ze-microwaveukucubungula isignali
I-Quantum microwave photonics ikwasebenzisa imisebenzi yokucubungula isignali ye-bandwidth ephezulu efana nokutshintsha kwesigaba kunye nokucoca. Ngokusebenzisa i-dispersive optical element kunye nokulungisa ubude bokukhanya, abaphandi babonise inyani yokuba isigaba se-RF sitshintsha ukuya kwi-8 GHz RF filtering bandwidths ukuya kwi-8 GHz. Okubalulekileyo kukuba, ezi mpawu zonke zifezekiswa kusetyenziswa ii-elektroniki ze-3 GHz, nto leyo ebonisa ukuba ukusebenza kudlula imida ye-bandwidth yesiqhelo.
Imephu yexesha engekho kwindawo ethile
Enye into enomdla ebangelwa kukudibana kwe-quantum kukumakisha i-frequency engeyiyo yendawo kunye nexesha. Le ndlela inokumakisha i-spectrum yomthombo we-photon enye eshukunyiswa yi-continuous-wave ukuya kwi-time domain kwindawo ekude. Le nkqubo isebenzisa ii-photon pairs ezihlanganisiweyo apho i-beam enye idlula kwi-spectral filter kwaye enye idlula kwi-dispersive element. Ngenxa yokuxhomekeka kwe-frequency ye-photons ezihlanganisiweyo, i-spectral filtering mode ikumakisha i-time domain engekho kwindawo.
Umfanekiso 1 ubonisa le ngcamango:
Le ndlela inokufikelela ekulinganisweni kwe-spectral okuguquguqukayo ngaphandle kokulawula ngokuthe ngqo umthombo wokukhanya olinganisiweyo.
Ukuqonda okucinezelweyo
I-Quantumi-microwave opticaliteknoloji ikwabonelela ngendlela entsha yokuva imiqondiso ye-broadband ngokucinezelwa. Besebenzisa ukungacwangciswanga okufumaneka ekufumaneni i-quantum, abaphandi babonise inkqubo yokuva i-quantum ngokucinezelwa ekwaziyo ukubuyisela kwimeko yesiqhelo.I-RF ye-10 GHzi-spectra. Inkqubo iguqula isignali ye-RF iye kwimeko ye-polarization ye-coherent photon. Ukufunyanwa kwe-single-photon emva koko kubonelela nge-natural random measure matrix yokuva okucinezelweyo. Ngale ndlela, isignali ye-broadband inokubuyiselwa kwisantya sesampulu yeYarnyquist.
Ukusasazwa kwezitshixo zeQuantum
Ukongeza ekuphuculeni usetyenziso lwe-microwave photonic yendabuko, itekhnoloji ye-quantum inokuphucula neenkqubo zonxibelelwano lwe-quantum ezifana nokusasazwa kwe-quantum key (QKD). Abaphandi babonise ukusasazwa kwe-subcarrier multiplex quantum key (SCM-QKD) ngokufaka i-microphone photons subcarrier kwinkqubo ye-quantum key distribution (QKD). Oku kuvumela izitshixo ezininzi ze-quantum ezizimeleyo ukuba zidluliselwe kubude obunye bokukhanya, ngaloo ndlela kwandisa ukusebenza kakuhle kwe-spectral.
Umfanekiso 2 ubonisa ingcamango kunye neziphumo zovavanyo zenkqubo ye-SCM-QKD ene-dual-carrier:
Nangona iteknoloji ye-quantum microwave photonics ithembisa, kusekho imingeni ethile:
1. Ubuchule obulinganiselweyo bexesha langempela: Inkqubo yangoku ifuna ixesha elininzi lokuqokelela ukuze yakhe kwakhona isignali.
2. Ubunzima bokujongana nemiqondiso eqhumayo/eyodwa: Uhlobo lwezibalo lokwakhiwa kwakhona luthintela ukusebenza kwayo kwimiqondiso engaphindiyo.
3. Guqula ube yi-microwave waveform yokwenyani: Kufuneka amanyathelo ongezelelweyo ukuguqula i-histogram eyakhiwe ngokutsha ibe yi-waveform esebenzisekayo.
4. Iimpawu zesixhobo: Kufuneka uphando olongezelelekileyo malunga nokuziphatha kwezixhobo ze-quantum kunye ne-microwave photonic kwiinkqubo ezidibeneyo.
5. Ukudibanisa: Uninzi lweenkqubo namhlanje zisebenzisa izinto ezidityanisiweyo ezinkulu.
Ukujongana nale mingeni nokuqhubela phambili eli candelo, kuvela iindlela ezininzi zophando ezithembisayo:
1. Phuhlisa iindlela ezintsha zokucubungula isignali ngexesha langempela kunye nokufumanisa kanye.
2. Hlola usetyenziso olutsha olusebenzisa uvakalelo oluphezulu, njengomlinganiselo we-microsphere yolwelo.
3. Phishekela ukufezekisa ii-photon kunye nee-elektroni ezidibeneyo ukuze unciphise ubungakanani kunye nobunzima.
4. Funda indlela ephuculweyo yokusebenzisana kwezinto ezikhanyayo kwiisekethe ze-photonic ze-quantum microwave ezidityanisiweyo.
5. Hlanganisa iteknoloji ye-quantum microwave photon kunye nezinye iiteknoloji ze-quantum ezisakhasayo.
Ixesha lokuthumela: Sep-02-2024