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. 2020 Mar 13;6(11):eaaz8065. doi: 10.1126/sciadv.aaz8065

Fig. 3. Terahertz quantum interference.

Fig. 3

In the collinear forward spot of the signal, interference is observed in the (A) Stokes and (B) anti-Stokes regions. (C and D) Corresponding FFTs peaks at about 1.26 THz. By placing an additional ITO glass in the idler path, no interference can be observed, and the peaks in the FFTs disappear.