Preparing general mixed quantum states on quantum computers
- URL: http://arxiv.org/abs/2402.04212v1
- Date: Tue, 6 Feb 2024 18:09:51 GMT
- Title: Preparing general mixed quantum states on quantum computers
- Authors: Douglas F. Pinto, Lucas Friedrich, Jonas Maziero
- Abstract summary: We present an algorithm tailored for the preparation of $d$-dimensional mixed quantum states using quantum information processors.
We conduct tests utilizing both X and non-X mixed two-qubit states, as well as arbitrary random density spanning one, two, and three qubits.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: The preparation of quantum states serves as a pivotal subroutine across
various domains, including quantum communication protocols, quantum computing,
and the exploration of quantum correlations and other resources within physical
systems. Building upon the protocols introduced in previous works [M. B.
Pozzobom and J. Maziero, Quantum Inf. Process. 18, 142 (2019)] and [E. R. G\aa
rding et al., Entropy 23, 797 (2021)], the authors of [F. Shahbeigi, M. Karimi
and V. Karimipour, Phys. Scr. 97, 025101 (2022)] demonstrated the capability to
prepare mixed two-qubit X-real states on quantum computers by extending the
methodology initially devised for mixed two-qubit Bell-diagonal states. In this
article, we delve into an overlooked pattern within these quantum circuits,
allowing us to generalize the approach to encompass a broader scope. Presenting
an algorithm tailored for the preparation of $d$-dimensional mixed quantum
states using quantum information processors, we offer a significant advancement
in mixed state preparation methodologies. To validate the efficacy of our
algorithm, we conducted comprehensive tests utilizing both X and non-X mixed
two-qubit states, as well as arbitrary random density matrices spanning one,
two, and three qubits.
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