Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hardy's paradox and violation of a state-independent Bell inequality in
  time   Tests such as Bell's inequality and Hardy's paradox show that joint
probabilities and correlations between distant particles in quantum mechanics
are inconsistent with local realistic theories. Here we experimentally
demonstrate these concepts in the time domain, using a photonic entangling gate
to perform nondestructive measurements on a single photon at different times.
We show that Hardy's paradox is much stronger in time and demonstrate the
violation of a temporal Bell inequality independent of the quantum state,
including for fully mixed states.

6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas