Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Active control of a plasmonic metamaterial for quantum state engineering   We experimentally demonstrate the active control of a plasmonic metamaterial
operating in the quantum regime. A two-dimensional metamaterial consisting of
unit cells made from gold nanorods is investigated. Using an external laser we
control the temperature of the metamaterial and carry out quantum process
tomography on single-photon polarization-encoded qubits sent through,
characterizing the metamaterial as a variable quantum channel. The overall
polarization response can be tuned by up to 33% for particular nanorod
dimensions. To explain the results, we develop a theoretical model and find
that the experimental results match the predicted behavior well. This work goes
beyond the use of simple passive quantum plasmonic systems and shows that
external control of plasmonic elements enables a flexible device that can be
used for quantum state engineering.

22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex