Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Artificial quantum thermal bath: Engineering temperature for a many-body
  quantum system   Temperature determines the relative probability of observing a physical
system in an energy state when that system is energetically in equilibrium with
its environment. In this paper, we present a theory for engineering the
temperature of a quantum system different from its ambient temperature. We
define criteria for an engineered quantum bath that, when coupled to a quantum
system with Hamiltonian $H$, drives the system to the equilibrium state
$\frac{e^{-H/T}}{{{\rm{Tr}}}(e^{-H/T})}$ with a tunable parameter $T$. This is
basically an analog counterpart of the digital quantum metropolis algorithm.
For a system of superconducting qubits, we propose a circuit-QED approximate
realization of such an engineered thermal bath consisting of driven lossy
resonators. Our proposal opens the path to simulate thermodynamical properties
of many-body quantum systems of size not accessible to classical simulations.
Also we discuss how an artificial thermal bath can serve as a temperature knob
for a hybrid quantum-thermal annealer.

8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th