Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Role of coherence in quantum-dot-based nanomachines within the Coulomb
  blockade regime   During the last decades, quantum dots within the Coulomb blockade regime of
transport have been proposed as essential building blocks for a wide variety of
nanomachines. This includes thermoelectric devices, quantum shuttles, quantum
pumps, and even quantum motors. However, in this regime, the role of quantum
mechanics is commonly limited to provide energy quantization while the working
principle of the devices is ultimately the same as their classic counterparts.
Here, we study quantum-dot-based nanomachines in the Coulomb blockade regime,
but in a configuration where the coherent superpositions of the dots' states
plays a crucial role. We show that the studied system can be used as the basis
for different forms of "true" quantum machines that should only work in the
presence of these coherent superpositions. We analyze the efficiency of these
machines against different nonequilibrium sources (bias voltage, temperature
gradient, and external driving) and the factors that limit it, including
decoherence and the role of the different orders appearing in the adiabatic
expansion of the charge/heat currents.

16
The categories of this paper are: stat
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci