Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hybrid Qubit gates in circuit QED: A scheme for quantum bit encoding and
  information processing   Solid state superconducting devices coupled to coplanar transmission lines
offer an exquisite architecture for quantum optical phenomena probing as well
as for quantum computation implementation, being the object of intense
theoretical and experimental investigation lately. In appropriate conditions
the transmission line radiation modes can get strongly coupled to a
superconducting device with only two levels -for that reason called artificial
atom or qubit. Employing this system we propose a hybrid two-quantum bit gate
encoding involving quantum electromagnetic field qubit states prepared in a
coplanar transmission line capacitively coupled to a single charge qubit. Since
dissipative effects are more drastic in the solid state qubit than in the field
one, it can be employed for storage of information, whose efficiency against
the action of an ohmic bath show that this encoding can be readily implemented
with present day technology. We extend the investigation to generate
entanglement between several solid state qubits and the field qubit through the
action of external classical magnetic pulses.

34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
2
The categories of this paper are: math
1
The categories of this paper are: cs
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th