Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single-photon-added coherent state based measurement transition and its
  advantages in precision measurement   In this work, the measurement transition as well as precision measurement
advantages of single-photon-added coherent state after postselected von Neumann
measurement are investigated. We noticed that the weak-to-strong measurement
transition characterized by the shifts of pointer's position and momentum
variables occurred in continuously by controlling a dimensionless parameter
associated with system-pointer coupling. We calculate the ratio between the
signal-to-noise ratio of nonpostselected and postselected measurements, and the
latter is used to find the quantum Fisher information. We found that the
single-photon-added coherent pointer state can improve the precision of the
measurement processes such as signal-to-noise ratio and parameter estimation
after postselected von Neumann measurement characterized by postselection and
weak value. Furthermore, contrary to the results of several previous studies,
we found that the anomalous large weak values can't improve the precision
measurement processes related to single-photon-added coherent state.

1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom