  Dissipation is unavoidable in quantum systems. It usually induces
decoherences and changes quantum correlations. To access the information of
strongly correlated quantum matters, one has to overcome or suppress
dissipation to extract out the underlying quantum phenomena. However, here we
find an opposite effect that dissipation can be utilized as a powerful tool to
probe the intrinsic correlations of quantum many-body systems. Applying
highly-controllable dissipation in ultracold atomic systems, we observe a
universal dissipative dynamics in strongly correlated one-dimensional quantum
gases. The total particle number of this system follows a universal
stretched-exponential decay, and the stretched exponent measures the anomalous
dimension of the spectral function, a critical exponent characterizing strong
quantum fluctuations of this system. This method could have broad applications
in detecting strongly correlated features, including spin-charge separations
and Fermi arcs in quantum materials.
