Quantum remote sensing utilizes quantum entanglement between the probe and the receiver to enhance the capability to sense a remote target.Quantum illumination is considered as a promising protocol to realize such a q...Quantum remote sensing utilizes quantum entanglement between the probe and the receiver to enhance the capability to sense a remote target.Quantum illumination is considered as a promising protocol to realize such a quantum technology in an environment of high loss and intense noise.However,the protocol requires an additional on-demand quantum memory,the imperfect performance of which diminishes the quantum advantage and limits the enhancement of sensing.In this paper,we propose a new protocol for quantum remote sensing based on quantum illumination with atom-light entangled interface.Compared to conventional light-only quantum illumination,the proposed protocol utilizes Raman coupling to create a long-lived atomic spin wave entangled with a Stokes light.The atomic spin wave,automatically built-in memory via the Raman coupling,acts as a local reference.The entangled Stokes light is used as a probe to irradiate a remote target.Meanwhile,the returned probe light from target is detected through coupling again to the atomic spin wave.A joint measurement on the returned probe light and spin wave is performed to discriminate the target.A 4 dB quantum enhancement over classical illumination is estimated.The atom-light entangled interface naturally integrates the quantum source,quantum memory,and quantum receiver in a single unit which exhibits great potential to develop highly compact and portable devices for quantum-enhanced remote sensing.展开更多
文章通过两步反应合成共轭超交联聚合物(TPP-CHCP)。TPP-CHCP有较宽的光吸收区间(400~900 nm),可作为光致原子转移自由基聚合(photocatalyzed atom transfer radical polymerization,P-ATRP)的光催化剂。TPP-CHCP可在940 nm近红外光照射...文章通过两步反应合成共轭超交联聚合物(TPP-CHCP)。TPP-CHCP有较宽的光吸收区间(400~900 nm),可作为光致原子转移自由基聚合(photocatalyzed atom transfer radical polymerization,P-ATRP)的光催化剂。TPP-CHCP可在940 nm近红外光照射下,驱动丙烯酸甲酯(MA)和甲基丙烯酸甲酯(MMA)的P-ATRP反应且单体转化率达到99%。所得聚合物的结构明确,分子量可控,分子量分布(D-_(s)<1.18)窄。在太阳光照射条件下,TPP-CHCP依然具有优异的光催化活性,可高效制备嵌段共聚物。展开更多
基金support from the Innovation Program for Quantum Science and Technology 2021ZD0303200the National Science Foundation of China(Grant NO.12234014,11904227,12204304,11654005)+4 种基金Shanghai Municipal Science and Technology Major Project(Grant NO.2019SHZDZX01)the Sailing Program of Shanghai Science and Technology Committee under Grant 19YF1421800the Fundamental Research Funds for the Central Universities,and the Fellowship of China Postdoctoral Science Foundation(Grant No.2020TQ0193,2021M702146,2021M702150,2021M702147,2022T150413)the National Key Research and Development Program of China under Grant number 2016YFA0302001support from the Shanghai talent program.
文摘Quantum remote sensing utilizes quantum entanglement between the probe and the receiver to enhance the capability to sense a remote target.Quantum illumination is considered as a promising protocol to realize such a quantum technology in an environment of high loss and intense noise.However,the protocol requires an additional on-demand quantum memory,the imperfect performance of which diminishes the quantum advantage and limits the enhancement of sensing.In this paper,we propose a new protocol for quantum remote sensing based on quantum illumination with atom-light entangled interface.Compared to conventional light-only quantum illumination,the proposed protocol utilizes Raman coupling to create a long-lived atomic spin wave entangled with a Stokes light.The atomic spin wave,automatically built-in memory via the Raman coupling,acts as a local reference.The entangled Stokes light is used as a probe to irradiate a remote target.Meanwhile,the returned probe light from target is detected through coupling again to the atomic spin wave.A joint measurement on the returned probe light and spin wave is performed to discriminate the target.A 4 dB quantum enhancement over classical illumination is estimated.The atom-light entangled interface naturally integrates the quantum source,quantum memory,and quantum receiver in a single unit which exhibits great potential to develop highly compact and portable devices for quantum-enhanced remote sensing.
文摘文章通过两步反应合成共轭超交联聚合物(TPP-CHCP)。TPP-CHCP有较宽的光吸收区间(400~900 nm),可作为光致原子转移自由基聚合(photocatalyzed atom transfer radical polymerization,P-ATRP)的光催化剂。TPP-CHCP可在940 nm近红外光照射下,驱动丙烯酸甲酯(MA)和甲基丙烯酸甲酯(MMA)的P-ATRP反应且单体转化率达到99%。所得聚合物的结构明确,分子量可控,分子量分布(D-_(s)<1.18)窄。在太阳光照射条件下,TPP-CHCP依然具有优异的光催化活性,可高效制备嵌段共聚物。
