# Quantized Nonlinear Transport with Ultracold Atoms

@inproceedings{Yang2022QuantizedNT, title={Quantized Nonlinear Transport with Ultracold Atoms}, author={Fan Yang and Hui Zhai}, year={2022} }

In this letter, we propose how to measure the quantized nonlinear transport using two-dimensional ultracold atomic Fermi gases in a harmonic trap. This scheme requires successively applying two optical pulses in the left and lower half-planes and then measuring the number of extra atoms in the ﬁrst quadrant. In ideal situations, this nonlinear density response to two successive pulses is quantized, and the quantization value probes the Euler characteristic of the local Fermi sea at the trap…

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