Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A continuous-time diffusion limit theorem for dynamical decoupling and
  intrinsic decoherence   We discuss a few mathematical aspects of random dynamical decoupling, a key
tool procedure in quantum information theory. In particular, we place it in the
context of discrete stochastic processes, limit theorems and CPT semigroups on
matrix algebras. We obtain precise analytical expressions for expectation and
variance of the density matrix and fidelity over time in the continuum-time
limit depending on the system Lindbladian, which then lead to rough short-time
estimates depending only on certain coupling strengths. We prove that dynamical
decoupling does not work in the case of intrinsic (i.e., not
environment-induced) decoherence, and together with the above-mentioned
estimates this yields a novel method of partially identifying intrinsic
decoherence.

10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom