Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Zak phase reconstruction enabled by thermal motion of atoms   Ultracold atoms provide a flexible platform for simulating topological
phases. However, they are intrinsically prone to thermal noise, which can
overwhelm topological response and hamper promised applications. On the other
hand, topological invariants can be reconstructed from the energy spectra of
particles subjected to a static force, based on the polarization relation
between Wannier-Stark ladders and Zak phases. Such spectroscopic methods
circumvent the obstacle to measuring topological invariants in thermal atoms.
Here we reconstruct Zak phases from the anti-crossing between Wannier-Stark
ladders in room-temperature superradiance lattices. Without dynamical
manipulation routinely needed in ultracold atoms, we evaluate Zak phases
directly from the absorption spectra. The thermal atomic motion, an essential
source of noise in cold atoms, plays a key role in extracting Zak phases. Our
approach paves the way of measuring topological invariants and developing their
applications in room-temperature atoms.

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The categories of this paper are: comp-gas
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-th
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The categories of this paper are: solv-int
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The categories of this paper are: econ
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The categories of this paper are: chao-dyn
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-ph
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The categories of this paper are: q-alg
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The categories of this paper are: acc-phys
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The categories of this paper are: alg-geom
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The categories of this paper are: patt-sol
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The categories of this paper are: eess
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-fin
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The categories of this paper are: plasm-ph