Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Talbot effect for exciton-polaritons   We demonstrate, experimentally and theoretically, a Talbot effect for hybrid
light-matter waves -- exciton-polariton condensate formed in a semiconductor
microcavity with embedded quantum wells. The characteristic 'Talbot carpet' is
produced by loading the exciton-polariton condensate into a microstructured one
dimensional periodic array of mesa traps, which creates an array of sources for
coherent polariton flow in the plane of the quantum wells. The spatial
distribution of the Talbot fringes outside the mesas mimics the near-field
diffraction of a monochromatic wave on a periodic amplitude and phase grating
with the grating period comparable to the wavelength. Despite the lossy nature
of the polariton system, the Talbot pattern persists for distances exceeding
the size of the mesas by an order of magnitude.

20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
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The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc