Quantum encrypted kev sib txuas lus
Quantum kev sib txuas lus zais cia, tseem hu ua quantum key faib, yog tib txoj kev sib txuas lus uas tau raug pov thawj tias muaj kev nyab xeeb kiag li ntawm tib neeg kev txawj ntse tam sim no. Nws txoj haujlwm yog txhawm rau faib qhov tseem ceeb ntawm Alice thiab Bob hauv lub sijhawm tiag tiag kom ntseeg tau tias muaj kev nyab xeeb ntawm kev sib txuas lus.
Kev sib txuas lus ruaj ntseg ib txwm yog xaiv ua ntej thiab muab tus yuam sij thaum Alice thiab Bob ntsib, lossis xa tus neeg tshwj xeeb los xa tus yuam sij. Txoj kev no yog qhov tsis yooj yim thiab kim, thiab feem ntau yog siv rau hauv cov xwm txheej tshwj xeeb xws li kev sib txuas lus ntawm submarine thiab lub hauv paus. Quantum tseem ceeb faib tuaj yeem tsim kom muaj quantum channel ntawm Alice thiab Bob, thiab muab cov yuam sij hauv lub sijhawm raws li kev xav tau. Yog tias muaj kev tawm tsam lossis eavesdropping tshwm sim thaum lub sijhawm faib khoom tseem ceeb, Alice thiab Bob tuaj yeem ntes lawv.
Quantum tseem ceeb faib thiab ib qho kev tshawb pom photon yog cov thev naus laus zis tseem ceeb ntawm quantum kev sib txuas lus ruaj ntseg. Nyob rau hauv xyoo tas los no, cov tsev kawm qib siab loj thiab cov chaw tshawb fawb tau ua ntau qhov kev sim kev tshawb fawb txog cov thev naus laus zis tseem ceeb ntawm quantum kev sib txuas lus.Electro-optic modulatorsthiabnqaim linewidth lasersnws tus kheej tsim los ntawm peb lub tuam txhab tau siv dav hauv quantum key faib tshuab. Siv qhov sib txawv tsis tu ncua quantum key faib ua piv txwv, raws li qhia hauv daim duab hauv qab no.
Raws li cov ntsiab lus saum toj no, electro-optical modulator (AM, PM) yog ib feem tseem ceeb ntawm quantum key tis test system, uas muaj peev xwm hloov kho qhov amplitude los yog theem ntawm qhov chaw kho qhov muag, kom cov teeb liab tawm tswv yim tuaj yeem ua tau. kis tau los ntawm optical quantum. Lub kaw lus yuav tsum tau lub teeb siv lub teeb modulator kom muaj qhov sib piv siab extinction thiab tsis tshua muaj kev nkag mus rau hauv thiaj li yuav tsim kom muaj qhov sib npaug siab ntawm lub teeb pom kev zoo.
| Cov khoom lag luam ntsig txog | Qauv thiab piav qhia |
| Nqaim linewidth laser | ROF-NLS series laser, RIO fiber ntau laser, NKT fiber ntau laser |
| ns pulse lub teeb ci (laser) | ROF-PLS series mem tes lub teeb qhov chaw, sab hauv thiab sab nraud ua rau xaiv tau, mem tes dav thiab rov ua dua zaus hloov tau. |
| Kev siv zog modulator | ROF-AM series modulators, mus txog 20GHz bandwidth, siab extinction piv mus txog 40dB |
| Phase modulator | ROF-PM series modulator, raug bandwidth 12GHz, ib nrab yoj voltage mus rau 2.5V |
| Microwave amplifier | ROF-RF series analog amplifier, txhawb 10G, 20G, 40G microwave teeb liab amplification, rau electro-optical modulator tsav |
| Balanced Photodetector | ROF-BPR series, siab hom kev tsis lees paub piv, tsis tshua muaj suab nrov |
Post lub sij hawm: Sep-09-2024