  Quantum simulation offers an analog approach for exploring exotic quantum
phenomena using controllable platforms, typically necessitating ultracold
temperatures to maintain the quantum coherence. Superradiance lattices (SLs)
have been harnessed to simulate coherent topological physics at room
temperature, but the thermal motion of atoms remains a notable challenge in
accurately measuring the physical quantities. To overcome this obstacle, we
invent and validate a velocity scanning tomography technique to discern the
responses of atoms with different velocities, allowing cold-atom spectroscopic
resolution within room-temperature SLs. By comparing absorption spectra with
and without atoms moving at specific velocities, we can derive the
Wannier-Stark ladders of the SL across various effective static electric
fields, their strengths being proportional to the atomic velocities. We extract
the Zak phase of the SL by monitoring the ladder frequency shift as a function
of the atomic velocity, effectively demonstrating the topological winding of
the energy bands. Our research signifies the feasibility of room-temperature
quantum simulation and facilitates their applications in quantum information
processing.
