Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ultrafast coherent dynamics of a photonic crystal all-optical switch   We present pump-probe measurements of an all-optical photonic crystal switch
based on a nanocavity, resolving fast coherent temporal dynamics. The
measurements demonstrate the importance of coherent effects typically neglected
when considering nanocavity dynamics. In particular, we report the observation
of an idler pulse. The measurements are in good agreement with a theoretical
model that allows us to ascribe the observation to oscillations of the free
carrier population in the nanocavity. The effect opens perspectives for the
realization of new all-optical photonic crystal switches with unprecedented
switching contrast.

2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga