Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Entanglement-interference complementarity and experimental demonstration
  in a superconducting circuit   Quantum entanglement between an interfering particle and a detector for
acquiring the which-path information plays a central role for enforcing Bohr's
complementary principle, but the quantitative relation between this
entanglement and the fringe visibility remains untouched upon. Here we find an
equality for quantifying this relation. Our equality characterizes how well the
interference pattern can be preserved when an interfering particle, initially
carrying a definite amount of coherence, is entangled with a which-path
detector to a certain degree. This equality provides a connection between
entanglement and interference in the unified framework of coherence, revealing
the quantitative entanglement-interference complementarity for the first time.
We experimentally demonstrate this relation with a superconducting circuit,
where a resonator serves as a which-path detector for an interfering qubit. The
results demonstrate quantum entanglement is the mechanism for prohibiting any
detector from acquiring which-path information without deteriorating the
interference pattern, which was not confirmed previously.

17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an