With energy-time entangled biphoton sources as the optical carrier and time-correlated single-photon detection for high-speed radio frequency(RF)signal recovery,the method of quantum microwave photonics(QMWP)has prese...With energy-time entangled biphoton sources as the optical carrier and time-correlated single-photon detection for high-speed radio frequency(RF)signal recovery,the method of quantum microwave photonics(QMWP)has presented the unprecedented potential of nonlocal RF signal encoding and efficient RF signal distilling from the dispersion interference associated with ultrashort pulse carriers.In this paper,its capability in microwave signal processing and prospective superiority are further demonstrated.Both QMWP RF phase shifting and transversal filtering functionality,which are the fundamental building blocks of microwave signal processing,are realized.Besides good immunity to the dispersion-induced frequency fading effect associated with the broadband carrier in classical MWP,a native two-dimensional parallel microwave signal processor is provided.These results well demonstrate the superiority of QMWP over classical MWP and open the door to new application fields of MWP involving encrypted processing.展开更多
We report an all-fiber telecom-band energy-time entangled biphoton source with all physical elements integrated into a compact cabinet.At a pump power of 800μW,the photon pairs generation rate reaches 6.9 MHz with th...We report an all-fiber telecom-band energy-time entangled biphoton source with all physical elements integrated into a compact cabinet.At a pump power of 800μW,the photon pairs generation rate reaches 6.9 MHz with the coincidence-toaccidental ratio[CAR]better than 1150.The long-term stability of the biphoton source is characterized by measuring the Hong-Ou-Mandel interference visibility and CAR within a continuous operation period of more than 10 h.Benefiting from the advantages of compact size,light weight,and high stability,this device provides a convenient resource for various field turnkey quantum communication and metrology applications.展开更多
基金National Natural Science Foundation of China(12033007,12103058,61801458,61875205,91836301)Key Project of Frontier Science Research of Chinese Academy of Sciences(QYZDB-SSW-SLH007)+1 种基金Strategic Priority Research Program of Chinese Academy of Sciences(XDC07020200)Youth Innovation Promotion Association of the Chinese Academy of Sciences(2021408,2022413)。
文摘With energy-time entangled biphoton sources as the optical carrier and time-correlated single-photon detection for high-speed radio frequency(RF)signal recovery,the method of quantum microwave photonics(QMWP)has presented the unprecedented potential of nonlocal RF signal encoding and efficient RF signal distilling from the dispersion interference associated with ultrashort pulse carriers.In this paper,its capability in microwave signal processing and prospective superiority are further demonstrated.Both QMWP RF phase shifting and transversal filtering functionality,which are the fundamental building blocks of microwave signal processing,are realized.Besides good immunity to the dispersion-induced frequency fading effect associated with the broadband carrier in classical MWP,a native two-dimensional parallel microwave signal processor is provided.These results well demonstrate the superiority of QMWP over classical MWP and open the door to new application fields of MWP involving encrypted processing.
基金supported by the National Natural Science Foundation of China(Nos.12033007,61875205,91836301,12103058,and 61801458)the Western Young Scholar Project of CAS(Nos.XAB2019B17 and XAB2019B15)+2 种基金the Frontier Science Key Research Project of CAS(No.QYZDB-SSWSLH007)the Strategic Priority Research Program of CAS(No.XDC07020200)the Youth Innovation Promotion Association,CAS(Nos.2022413 and 2021408)。
文摘We report an all-fiber telecom-band energy-time entangled biphoton source with all physical elements integrated into a compact cabinet.At a pump power of 800μW,the photon pairs generation rate reaches 6.9 MHz with the coincidence-toaccidental ratio[CAR]better than 1150.The long-term stability of the biphoton source is characterized by measuring the Hong-Ou-Mandel interference visibility and CAR within a continuous operation period of more than 10 h.Benefiting from the advantages of compact size,light weight,and high stability,this device provides a convenient resource for various field turnkey quantum communication and metrology applications.
