Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measuring finite-range phase coherence in an optical lattice using
  Talbot interferometry   One of the important goals of present research is to control and manipulate
coherence in a broad variety of systems, such as semiconductor spintronics,
biological photosynthetic systems, superconducting qubits and complex atomic
networks. Over the past decades interferometry of atoms and molecules has
proven to be a powerful tool to explore coherence. Here we demonstrate a
near-field interferometer based on the Talbot effect, which allows to measure
finite-range phase coherence of ultracold atoms in an optical lattice. We apply
this interferometer to study the build-up of phase coherence after a quantum
quench of a Bose-Einstein condensate residing in a one-dimensional optical
lattice. Our technique of measuring finite-range phase coherence is generic,
easy to adopt, and can be applied in practically all lattice experiments
without further modifications.

27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics