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A Quantum Ghost Imaging Spectrometer (2308.02318v1)
Published 4 Aug 2023 in quant-ph and physics.optics
Abstract: We present a device that exploits spatial and spectral correlations in parametric downconversion at once. By using a ghost imaging arrangement, we have been able to reconstruct remotely the frequency profile of a composite system. The presence of distinct spectral regions is corroborated by a model-independent statistical analysis that constitutes an intriguing possibility also in the low count regime.