Daim ntawv thov ntawm quantum microwave photonics technology

Daim ntawv thov ntawm quantumKev siv tshuab microwave photonics

Kev kuaj pom lub teeb liab tsis muaj zog
Ib qho ntawm cov kev siv thev naus laus zis quantum microwave photonics zoo tshaj plaws yog kev ntes cov teeb liab microwave / RF uas tsis muaj zog heev. Los ntawm kev siv cov duab photon ib leeg, cov kab ke no muaj kev nkag siab ntau dua li cov txheej txheem ib txwm muaj. Piv txwv li, cov kws tshawb fawb tau ua qauv qhia txog lub kaw lus quantum microwave photonic uas tuaj yeem ntes cov teeb liab qis li -112.8 dBm yam tsis muaj kev ua kom nrov hluav taws xob. Qhov kev nkag siab siab heev no ua rau nws zoo tagnrho rau cov ntawv thov xws li kev sib txuas lus tob tob.

Cov duab hluav taws xob microwavekev ua cov teeb liab
Cov quantum microwave photonics kuj siv cov haujlwm ua cov teeb liab siab xws li kev hloov theem thiab kev lim dej. Los ntawm kev siv cov khoom siv dispersive optical thiab kho qhov wavelength ntawm lub teeb, cov kws tshawb fawb tau ua pov thawj qhov tseeb tias RF theem hloov mus txog 8 GHz RF filtering bandwidths txog li 8 GHz. Qhov tseem ceeb, cov yam ntxwv no tau ua tiav tag nrho siv 3 GHz electronics, uas qhia tau tias qhov kev ua tau zoo tshaj qhov txwv bandwidth ib txwm muaj.

Kev kos duab zaus tsis yog hauv zos rau lub sijhawm
Ib qho peev xwm nthuav uas tau los ntawm quantum entanglement yog qhov kev kos duab ntawm cov zaus tsis yog hauv zos rau lub sijhawm. Cov txheej txheem no tuaj yeem kos duab cov spectrum ntawm ib qho chaw txuas ntxiv mus rau ib qho chaw nyob deb ntawm qhov chaw nyob deb. Lub kaw lus siv cov khub photon entangled uas ib lub beam hla dhau lub lim spectral thiab lwm qhov hla dhau lub ntsiab lus dispersive. Vim yog qhov zaus nyob ntawm cov photons entangled, hom kev lim spectral yog mapped tsis yog hauv zos rau lub sijhawm sau.
Daim Duab 1 qhia txog lub tswv yim no:

Txoj kev no tuaj yeem ua tiav kev ntsuas spectral yooj ywm yam tsis tau ncaj qha tswj lub teeb ntsuas.

Kev ntsuas compressed
Quantummicrowave kho qhov muagthev naus laus zis kuj muab ib txoj hauv kev tshiab rau kev ntsuas cov teeb liab broadband. Siv qhov randomness uas muaj nyob hauv kev ntsuas quantum, cov kws tshawb fawb tau ua pov thawj tias muaj lub kaw lus quantum compressed sensing uas muaj peev xwm rov qab tau10 GHz RFspectra. Lub kaw lus hloov kho lub teeb liab RF mus rau lub xeev polarization ntawm lub photon coherent. Kev kuaj pom ib lub photon ces muab cov matrix ntsuas random ntuj rau kev ntsuas compressed. Ua li no, lub teeb liab broadband tuaj yeem rov qab tau ntawm Yarnyquist sampling rate.

Kev faib tawm ntawm tus yuam sij quantum
Ntxiv rau kev txhim kho cov ntawv thov microwave photonic ib txwm muaj, cov thev naus laus zis quantum kuj tseem tuaj yeem txhim kho cov kab ke sib txuas lus quantum xws li quantum key distribution (QKD). Cov kws tshawb fawb tau ua qauv qhia txog subcarrier multiplex quantum key distribution (SCM-QKD) los ntawm kev sib xyaw microwave photons subcarrier rau ntawm quantum key distribution (QKD) system. Qhov no tso cai rau ntau tus yuam sij quantum ywj pheej kom xa mus rau ib qho wavelength ntawm lub teeb, yog li ua rau spectral efficiency nce ntxiv.
Daim Duab 2 qhia txog lub tswv yim thiab cov txiaj ntsig ntawm kev sim ntawm lub kaw lus dual-carrier SCM-QKD:

Txawm hais tias cov thev naus laus zis quantum microwave photonics muaj kev cia siab, tseem muaj qee qhov kev cov nyom:
1. Lub peev xwm tiag tiag txwv: Lub kaw lus tam sim no xav tau ntau lub sijhawm los tsim kho lub teeb liab.
2. Nyuaj rau kev daws teeb meem tawg/ib qho teeb liab: Qhov xwm txheej ntawm kev tsim kho dua tshiab txwv nws txoj kev siv rau cov teeb liab uas tsis rov ua dua.
3. Hloov mus rau lub microwave waveform tiag tiag: Yuav tsum muaj cov kauj ruam ntxiv los hloov cov histogram uas tau tsim kho dua tshiab mus rau hauv lub waveform uas siv tau.
4. Cov yam ntxwv ntawm cov cuab yeej: Yuav tsum tau kawm ntxiv txog tus cwj pwm ntawm cov khoom siv quantum thiab microwave photonic hauv cov kab ke ua ke.
5. Kev Sib Koom Ua Ke: Feem ntau cov kab ke niaj hnub no siv cov khoom loj sib cais.

Yuav kom daws tau cov teeb meem no thiab ua kom lub teb chaws vam meej, muaj ntau txoj kev tshawb fawb zoo uas tab tom tshwm sim:
1. Tsim cov txheej txheem tshiab rau kev ua cov cim qhia tiag tiag thiab kev kuaj pom ib zaug xwb.
2. Tshawb nrhiav cov ntawv thov tshiab uas siv kev rhiab heev, xws li kev ntsuas kua microsphere.
3. Ua kom tiav qhov kev paub txog cov photons thiab electrons sib xyaw ua ke kom txo qhov loj me thiab qhov nyuaj.
4. Kawm txog kev sib cuam tshuam ntawm lub teeb thiab cov khoom hauv cov voj voog quantum microwave photonic.
5. Muab cov thev naus laus zis quantum microwave photon ua ke nrog lwm cov thev naus laus zis quantum tshiab.