Fig. 2: Frequency translation. | Nature Communications

Fig. 2: Frequency translation.

From: Arbitrary linear transformations for photons in the frequency synthetic dimension

Fig. 2

A two-ring system with two modulation tones per ring (Nr = 2, Nf = 2) demonstrating a conversion efficiency exceeding 1 − 10−5 from mode 0 to +2. The bar plots show log-scale photon flux in each mode at a the input, and b the output. c The error function shown as a function of the number of iterations of the optimization algorithm to achieve the conversion efficiency of b. Modulation parameters are provided in Supplementary Note 6.

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