Quantum memories are essential for photonic quantum technologies,enabling long-distance quantum communication and serving as delay units in quantum computing.Hot atomic vapors using electromagnetically induced transpa...Quantum memories are essential for photonic quantum technologies,enabling long-distance quantum communication and serving as delay units in quantum computing.Hot atomic vapors using electromagnetically induced transparency provide a simple platform with second-long photon storage capabilities.Light-guiding structures enhance performance,but current hollow-core fiber waveguides face significant limitations in filling time,physical size,fabrication versatility,and large-scale integration potential.In this work,we demonstrate the storage of attenuated coherent light pulses in a cesium(Cs)quantum memory based on a 3D-nanoprinted hollow-core waveguide,known as a light cage(LC),with several hundred nanoseconds of storage times.Leveraging the versatile fabrication process,we successfully integrated multiple LC memories onto a single chip within a Cs vapor cell,achieving consistent performance across all devices.We conducted a detailed investigation into storage efficiency,analyzing memory lifetime and bandwidth.These results represent a significant advancement toward spatially multiplexed quantum memories and have the potential to elevate memory integration to unprecedented levels.We anticipate applications in parallel single-photon synchronization for quantum repeater nodes and photonic quantum computing platforms.展开更多
基金supported by the German Research Foundation(DFG),projects SCHM2655/15-1,SCHM2655/22-1,SCHM2655/21-1,BE2224/19-1the Federal Ministry of Education and Research(BMBF),project 16KISQ003.
文摘Quantum memories are essential for photonic quantum technologies,enabling long-distance quantum communication and serving as delay units in quantum computing.Hot atomic vapors using electromagnetically induced transparency provide a simple platform with second-long photon storage capabilities.Light-guiding structures enhance performance,but current hollow-core fiber waveguides face significant limitations in filling time,physical size,fabrication versatility,and large-scale integration potential.In this work,we demonstrate the storage of attenuated coherent light pulses in a cesium(Cs)quantum memory based on a 3D-nanoprinted hollow-core waveguide,known as a light cage(LC),with several hundred nanoseconds of storage times.Leveraging the versatile fabrication process,we successfully integrated multiple LC memories onto a single chip within a Cs vapor cell,achieving consistent performance across all devices.We conducted a detailed investigation into storage efficiency,analyzing memory lifetime and bandwidth.These results represent a significant advancement toward spatially multiplexed quantum memories and have the potential to elevate memory integration to unprecedented levels.We anticipate applications in parallel single-photon synchronization for quantum repeater nodes and photonic quantum computing platforms.
