Abstract
The currently used ghost-image schemes traditionally involve two-mode entangled light states or incoherent radiation. Here, we consider the application of four-mode entangled light states and show that multiplexed ghost images (MGI) formed by four-mode entangled quantum light states have mutual spatial correlations determined by the eighth-order field correlation functions. We develop a special algorithm to calculate high-order correlations of Bose operators. We also demonstrate that accounting of the MGI correlations allows us to improve the quality of the restored image of an object while processing the MGI by the measurement reduction method. We carry out computer modeling of the image recovery from the MGI. We establish that in the considered example the signal-to-noise ratio of the reduced ghost image is 4.6 times higher than the best signal-to-noise ratio for the ghost images themselves.
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Balakin, D.A., Belinsky, A.V. & Chirkin, A.S. Correlations of Multiplexed Quantum Ghost Images and Improvement of the Quality of Restored Image. J Russ Laser Res 38, 164–172 (2017). https://doi.org/10.1007/s10946-017-9630-z
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DOI: https://doi.org/10.1007/s10946-017-9630-z