Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Coherent transfer of singlet-triplet qubit states in an architecture of
  triple quantum dots   We propose two schemes to coherently transfer arbitrary quantum states of the
two-electron singlet-triplet qubit across a chain of 3 quantum dots. The
schemes are based on electrical control over the detuning energy of the quantum
dots. The first is a pulse-gated scheme, requiring dc pulses and engineering of
inter- and intra-dot Coulomb energies. The second scheme is based on the
adiabatic theorem, requiring time-dependent control of the detuning energy
through avoided crossings at a rate that the system remains in the ground
state. We simulate the transfer fidelity using typical experimental parameters
for silicon quantum dots. Our results give state transfer fidelities between
$94.3\% < \mathcal{F} < 99.5\%$ at sub-ns gate times for the pulse-gated scheme
and between $75.4\% < \mathcal{F} < 99.0 \%$ at tens of ns for the adiabatic
scheme. Taking into account dephasing from charge noise, we obtain state
transfer fidelities between $94.0\% < \mathcal{F} < 99.2\%$ for the pulse-gated
scheme and between $64.9\% < \mathcal{F} < 93.6\%$ for the adiabatic scheme.

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The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin