We demonstrate the spectroscopy of incoherent light with subdiffraction resolution.In a proof-of-principle experiment,we analyze the spectrum of a pair of incoherent pointlike sources whose separation is below the dif...We demonstrate the spectroscopy of incoherent light with subdiffraction resolution.In a proof-of-principle experiment,we analyze the spectrum of a pair of incoherent pointlike sources whose separation is below the diffraction limit.The two sources mimic a planetary system,with a brighter source for the star and a dimmer one for the planet.Acquiring spectral information about the secondary source is difficult because the two images have a substantial overlap.This limitation is solved by leveraging a structured measurement based on spatial-mode demultiplexing,where light is first sorted in its Hermite–Gaussian components in the transverse field then measured by photon detection.This allows us to effectively decouple the photons coming from the two sources.An application is suggested to enhance the exoplanets’atmosphere spectroscopy.A number of experiments of super-resolution imaging based on spatial demultiplexing have been conducted in the past few years,with promising results.Here,for the first time to the best of our knowledge,we extend this concept to the domain of spectroscopy.展开更多
In this study,we present a comprehensive analysis of an unidentified pointlike ultra-high-energy(UHE)g-ray source,designated as 1LHAASO J1740+0948u,situated in the vicinity of the middle-aged pulsar PSR J1740+1000.The...In this study,we present a comprehensive analysis of an unidentified pointlike ultra-high-energy(UHE)g-ray source,designated as 1LHAASO J1740+0948u,situated in the vicinity of the middle-aged pulsar PSR J1740+1000.The detection significance reached 17.1 s(9.4 s)above 25 TeV(100 TeV).展开更多
基金European Commission (PE0000023-NQSTI)Ministero dell'Universitàe della Ricerca (QUEXO2022NZP4T3)Italian Space Agency (Subdiffraction Quantum Imaging SQI 2023-13-HH.0)。
文摘We demonstrate the spectroscopy of incoherent light with subdiffraction resolution.In a proof-of-principle experiment,we analyze the spectrum of a pair of incoherent pointlike sources whose separation is below the diffraction limit.The two sources mimic a planetary system,with a brighter source for the star and a dimmer one for the planet.Acquiring spectral information about the secondary source is difficult because the two images have a substantial overlap.This limitation is solved by leveraging a structured measurement based on spatial-mode demultiplexing,where light is first sorted in its Hermite–Gaussian components in the transverse field then measured by photon detection.This allows us to effectively decouple the photons coming from the two sources.An application is suggested to enhance the exoplanets’atmosphere spectroscopy.A number of experiments of super-resolution imaging based on spatial demultiplexing have been conducted in the past few years,with promising results.Here,for the first time to the best of our knowledge,we extend this concept to the domain of spectroscopy.
基金supported by the following grants:the National Natural Science Foundation of China nos.12393851,12393852,12393853,12393854,12205314,12105301,12305120,12261160362,12105294,U1931201,12375107,and 12173039the Department of Science and Technology of Sichuan Province,China,no.24NSFSC2319+1 种基金the Project for Young Scientists in Basic Research of Chinese Academy of Sciences no.YSBR-061the NSRF in Thailand via the Program Management Unit for Human Resources and Institutional Development,Research and Innovation(B39G670013).
文摘In this study,we present a comprehensive analysis of an unidentified pointlike ultra-high-energy(UHE)g-ray source,designated as 1LHAASO J1740+0948u,situated in the vicinity of the middle-aged pulsar PSR J1740+1000.The detection significance reached 17.1 s(9.4 s)above 25 TeV(100 TeV).
