Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Maximizing complementary quantities by projective measurements   In this work we study the so-called quantitative complementarity quantities.
We focus in the following physical situation: two qubits ($q_A$ and $q_B$) are
initially in a maximally entangled state. One of them ($q_B$) interacts with a
$N$-qubit system ($R$). After the interaction, projective measurements are
performed in each of the qubits of $R$, in a basis that is chosen after
independent optimization procedures: maximization of the visibility, the
concurrence and the predictability. For a specific maximization procedure, we
study in details how each of the complementary quantities behave, conditioned
on the intensity of the coupling between $q_B$ and the $N$ qubits. We show
that, if the coupling is sufficiently "strong", independent of the maximization
procedure, the concurrence tends to decay quickly. Interestingly enough, the
behavior of the concurrence in this model is similar to the entanglement
dynamics of a two qubit system subjected to a thermal reservoir, despite that
we consider finite $N$. However the visibility shows a different behavior: its
maximization is more efficient for stronger coupling constants. Moreover, we
investigate how the distinguishability, or the information stored in different
parts of the system, is distributed for different couplings.

24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg