Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum state reconstruction in the presence of dissipation   We propose a realistic scheme to determine the quantum state of a single mode
cavity field even after it has started to decay due to the coupling with an
environment. Although dissipation destroys quantum coherences, we show that at
zero temperature enough information about the initial state remains, in an
observable quantity, to allow the reconstruction of its Wigner function.

5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th