Efficient and precise photon-number-resolving detectors are essential for optical quantum information science.Despite this,very few detectors have been able to distinguish photon numbers with both high fidelity and a ...Efficient and precise photon-number-resolving detectors are essential for optical quantum information science.Despite this,very few detectors have been able to distinguish photon numbers with both high fidelity and a large dynamic range,all while maintaining high speed and high timing precision.Superconducting nanostrip-based detectors excel at counting single photons efficiently and rapidly,but face challenges in balancing dynamic range and fidelity.Here,we have pioneered the demonstration of 10 true photon-number resolution using a superconducting microstrip detector,with readout fidelity reaching an impressive 98%and 90%for 4-photon and 6-photon events,respectively.Furthermore,our proposed dual-channel timing setup drastically reduces the amount of data acquisition by 3 orders of magnitude,allowing for real-time photon-number readout.We then demonstrate the utility of our scheme by implementing a quantum random-number generator based on sampling the parity of a coherent state,which guarantees inherent unbiasedness,robustness against experimental imperfections and environmental noise,as well as invulnerability to eavesdropping.Our solution boasts high fidelity,a large dynamic range,and real-time characterization for photon-number resolution and simplicity with respect to device structure,fabrication,and readout,which may provide a promising avenue towards optical quantum information science.展开更多
Dear Editor,The increasing consumption of dietary fructose has been proposed as a major contributor to metabolic syndrome,which promotes glomerular podocyte injury and proteinuria.1 Mitochondria are the key organelles...Dear Editor,The increasing consumption of dietary fructose has been proposed as a major contributor to metabolic syndrome,which promotes glomerular podocyte injury and proteinuria.1 Mitochondria are the key organelles for cellular bioenergetics to maintain energy homeostasis and gluconeogenesis.2 Mitochondrial damage may be linked to kidney diseases,in particular glomerular nephropathy.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.62301541,61971408,61827823,and 12033007)support from Shanghai Sailing Program(Grant No.23YF1456200)
文摘Efficient and precise photon-number-resolving detectors are essential for optical quantum information science.Despite this,very few detectors have been able to distinguish photon numbers with both high fidelity and a large dynamic range,all while maintaining high speed and high timing precision.Superconducting nanostrip-based detectors excel at counting single photons efficiently and rapidly,but face challenges in balancing dynamic range and fidelity.Here,we have pioneered the demonstration of 10 true photon-number resolution using a superconducting microstrip detector,with readout fidelity reaching an impressive 98%and 90%for 4-photon and 6-photon events,respectively.Furthermore,our proposed dual-channel timing setup drastically reduces the amount of data acquisition by 3 orders of magnitude,allowing for real-time photon-number readout.We then demonstrate the utility of our scheme by implementing a quantum random-number generator based on sampling the parity of a coherent state,which guarantees inherent unbiasedness,robustness against experimental imperfections and environmental noise,as well as invulnerability to eavesdropping.Our solution boasts high fidelity,a large dynamic range,and real-time characterization for photon-number resolution and simplicity with respect to device structure,fabrication,and readout,which may provide a promising avenue towards optical quantum information science.
基金This work was supported by Grants from the National Natural Science Foundation of China(81730105 to L.-D.K.,31770838 to L.F.)。
文摘Dear Editor,The increasing consumption of dietary fructose has been proposed as a major contributor to metabolic syndrome,which promotes glomerular podocyte injury and proteinuria.1 Mitochondria are the key organelles for cellular bioenergetics to maintain energy homeostasis and gluconeogenesis.2 Mitochondrial damage may be linked to kidney diseases,in particular glomerular nephropathy.
