Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Efficient quantum circuits for quantum computational chemistry   Molecular quantum simulations with the variational quantum eigensolver (VQE)
rely on ansatz states that approximate the molecular ground states. These
ansatz states are generally defined by parametrized fermionic excitation
operators and an initial reference state. Efficient ways to perform fermionic
excitations are vital for the realization of the VQE on noisy
intermediate-scale quantum computers. Here, we address this issue by first
demonstrating circuits that perform qubit excitations, excitations that do not
account for fermionic anticommutation relations. We then extend the
functionality of these circuits to perform fermionic excitations. Compared to
circuits constructed with the standard use of "$CNOT$ staircases", our circuits
offer a linear reduction in the number of $CNOT$ gates, by a factor of $2$ and
$8$ per single and double excitation, respectively. Our results reduce the
requirements for near-term realizations of quantum molecular simulations.

11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
2
The categories of this paper are: math