Correlated photon pairs, generated via sunlight-pumped spontaneous parametric down-conversion in a nonlinear crystal, demonstrate ghost imaging. Credit: W. Zhang (Xiamen University) Scientists have shown that
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Correlated photon pairs, generated via sunlight-pumped spontaneous parametric down-conversion in a nonlinear crystal, demonstrate ghost imaging. Credit: W. Zhang (Xiamen University) Scientists have shown that
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Artistic rendering of noncollinear sum-frequency generation (SFG): two infrared pulses mix in a χ² crystal to produce three output pulses (green), with the central SFG
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Artist’s rendering of a biocomputing device that combines biological neurons with advanced electronics into a network that can be programmed to recognize patterns. Credit: Kate
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