Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: mpiQulacs: A Distributed Quantum Computer Simulator for A64FX-based
  Cluster Systems   Quantum computer simulators running on classical computers are essential for
developing real quantum computers and emerging quantum applications. In
particular, state vector simulators, which store a full state vector in memory
and update it in every quantum operation, are available to simulate an
arbitrary form of quantum circuits, debug quantum applications, and validate
future quantum computers. However, the time and space complexity grows
exponentially with the number of qubits and easily exceeds the capability of a
single machine.
  Therefore, we develop a distributed state vector simulator, $mpiQulacs$, that
is optimized for large-scale simulation on A64FX-based cluster systems. A64FX
is an ARM-based CPU that is also equipped in the world's top Fugaku
supercomputer. We evaluate weak and strong scaling of mpiQulacs with up to 36
qubits on a new 64-node A64FX-based cluster system named $Todoroki$. By
comparing mpiQulacs with existing distributed state vector simulators, we show
that mpiQulacs achieves the highest performance for large-scale simulation on
tens of nodes while sustaining a nearly ideal scalability. Besides, we define a
new metric, $quantum B/F ratio$, and use it to demonstrate that mpiQulacs
running on Todoroki fits the requirements of distributed state vector
simulation rather than the existing simulators running on general purpose
CPU-based or GPU-based cluster systems.

17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
2
The categories of this paper are: math