Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of the Mott Insulator to Superfluid Crossover of a
  Driven-Dissipative Bose-Hubbard System   Dissipation is ubiquitous in nature and plays a crucial role in quantum
systems such as causing decoherence of quantum states. Recently, much attention
has been paid to an intriguing possibility of dissipation as an efficient tool
for preparation and manipulation of quantum states. Here we report the
realization of successful demonstration of a novel role of dissipation in a
quantum phase transition using cold atoms. We realize an engineered dissipative
Bose-Hubbard system by introducing a controllable strength of two-body
inelastic collision via photo-association for ultracold bosons in a
three-dimensional optical lattice. In the dynamics subjected to a slow
ramp-down of the optical lattice, we find that strong on-site dissipation
favors the Mott insulating state: the melting of the Mott insulator is delayed
and the growth of the phase coherence is suppressed. The controllability of the
dissipation is highlighted by quenching the dissipation, providing a novel
method for investigating a quantum many-body state and its non-equilibrium
dynamics.

8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas