Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Time-bin to Polarization Conversion of Ultrafast Photonic Qubits   The encoding of quantum information in photonic time-bin qubits is apt for
long distance quantum communication schemes. In practice, due to technical
constraints such as detector response time, or the speed with which
co-polarized time-bins can be switched, other encodings, e.g. polarization, are
often preferred for operations like state detection. Here, we present the
conversion of qubits between polarization and time-bin encodings using a method
that is based on an ultrafast optical Kerr shutter and attain efficiencies of
97% and an average fidelity of 0.827+/-0.003 with shutter speeds near 1 ps. Our
demonstration delineates an essential requirement for the development of hybrid
and high-rate optical quantum networks.

11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
3
The categories of this paper are: physics