Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: When quantum tomography goes wrong: drift of quantum sources and other
  errors   The principle behind quantum tomography is that a large set of observations
-- many samples from a "quorum" of distinct observables -- can all be explained
satisfactorily as measurements on a single underlying quantum state or process.
Unfortunately, this principle may not hold. When it fails, any standard
tomographic estimate should be viewed skeptically. Here we propose a simple way
to test for this kind of failure using Akaike's Information Criterion (AIC). We
point out that the application of this criterion in a quantum context, while
still powerful, is not as straightforward as it is in classical physics. This
is especially the case when future observables differ from those constituting
the quorum.

24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph