Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mapping a quantum walk by tuning the coupling coefficient   We present a method to map the evolution of photonic random walks that is
compatible with nonclassical input light. Our approach leverages a newly
developed flexible waveguide platform to tune the jumping rate between spatial
modes, allowing the observation of a range of evolution times in a chip of
fixed length. In a proof-of-principle demonstration we reconstruct the
evolution of photons through a uniform array of coupled waveguides by
monitoring the end-face alone. This approach enables direct observation of mode
occupancy at arbitrary resolution, extending the utility of photonic random
walks for quantum simulations and related applications.

18
The categories of this paper are: econ
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc