Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Robust preparation of Wigner-negative states with optimized
  SNAP-displacement sequences   Hosting non-classical states of light in three-dimensional microwave cavities
has emerged as a promising paradigm for continuous-variable quantum information
processing. Here we experimentally demonstrate high-fidelity generation of a
range of Wigner-negative states useful for quantum computation, such as
Schr\"{o}dinger-cat states, binomial states, Gottesman-Kitaev-Preskill (GKP)
states, as well as cubic phase states. The latter states have been long sought
after in quantum optics and were never achieved experimentally before. To do
so, we use a sequence of interleaved selective number-dependent arbitrary phase
(SNAP) gates and displacements. We optimize the state preparation in two steps.
First we use a gradient-descent algorithm to optimize the parameters of the
SNAP and displacement gates. Then we optimize the envelope of the pulses
implementing the SNAP gates. Our results show that this way of creating highly
non-classical states in a harmonic oscillator is robust to fluctuations of the
system parameters such as the qubit frequency and the dispersive shift.

25
The categories of this paper are: patt-sol
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph