Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single-electron computing without dissipation   A possibility to perform single-electron computing without dissipation in the
array of tunnel-coupled quantum dots is studied theoretically, taking the spin
gate NOT (inverter) as an example. It is shown that the logical operation can
be realized at the stage of unitary evolution of electron subsystem, though
complete switching of the inverter cannot be achieved in a reasonable time at
realistic values of model parameters. An optimal input magnetic field is found
as a function of inter-dot tunneling energy and intra-dot Coulomb repulsion
energy.

18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph