Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum thermometry in a squeezed thermal bath   We address the dephasing dynamics of the quantum Fisher information (QFI) for
the process of quantum thermometry with probes coupled to squeezed thermal
baths via the nondemolition interaction. We also calculate the upper bound for
the parameter estimation and investigate how the optimal estimation is affected
by the initial conditions and decoherence, particularly the squeezing
parameters. Moreover, the feasibility of the optimal measurement of the
temperature is discussed in detail. Then, the results are generalized for
entangled probes and the multi-qubit scenarios for probing the temperature are
analysed. Our results show that the squeezing can decrease the number of
channel uses for optimal thermometry. Comparing different schemes for
multi-qubit estimation, we find that an increase in the number of the qubits,
interacting with the channel, does not necessarily vary the precision of
estimating the temperature. Besides, we discuss the enhancement of the quantum
thermometry using the parallel strategy and starting from the W state.

25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex