Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Decomposition of high-rank factorized unitary coupled-cluster operators
  using ancilla and multi-qubit controlled low-rank counterparts   The factorized form of the unitary coupled-cluster approximation is one of
the most promising methodologies to prepare trial states for strongly
correlated systems within the variational quantum eigensolver framework. The
factorized form of the UCC ansatz can be systematically applied to a reference
state to generate the desired entanglement. The difficulty associated with such
an approach is the requirement of simultaneously entangling a growing number of
qubits, which quickly exceeds the hardware limitations of today's quantum
machines. In particular, while circuits for singles and double excitations can
be performed on current hardware, higher-rank excitations require too many gate
operations. In this work, we propose a set of new schemes that trade off using
extra qubits for a reduced gate depth to decompose high-rank UCC excitation
operators into significantly lower depth circuits. These results will remain
useful even when fault-tolerant machines are available to reduce the overall
state-preparation circuit depth.

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The categories of this paper are: funct-an
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The categories of this paper are: comp-gas
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The categories of this paper are: chem-ph
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
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The categories of this paper are: eess
31
The categories of this paper are: ao-sci
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The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
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The categories of this paper are: astro-ph
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The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
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The categories of this paper are: bayes-an
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The categories of this paper are: solv-int