Scalable circuits for preparing ground states on digital quantum computers: The Schwinger model vacuum on 100 qubits

RC Farrell, M Illa, AN Ciavarella, MJ Savage - PRX Quantum, 2024 - APS
The vacuum of the lattice Schwinger model is prepared on up to 100 qubits of IBM's Eagle-
processor quantum computers. A new algorithm to prepare the ground state of a gapped …

Quantum simulations of hadron dynamics in the Schwinger model using 112 qubits

RC Farrell, M Illa, AN Ciavarella, MJ Savage - Physical Review D, 2024 - APS
Hadron wave packets are prepared and time evolved in the Schwinger model using 112
qubits of IBM's 133-qubit Heron quantum computer ibm_torino. The initialization of the …

A comprehensive survey on quantum computer usage: How many qubits are employed for what purposes?

T Ichikawa, H Hakoshima, K Inui, K Ito… - arXiv preprint arXiv …, 2023 - arxiv.org
Quantum computers (QCs), which work based on the law of quantum mechanics, are
expected to be faster than classical computers in several computational tasks such as prime …

Ergotropy and capacity optimization in Heisenberg spin-chain quantum batteries

A Ali, S Al-Kuwari, MI Hussain, T Byrnes, MT Rahim… - Physical Review A, 2024 - APS
This study examines the performance of finite spin quantum batteries (QBs) using
Heisenberg XX, XY, XXZ, and XYZ spin models with Dzyaloshinsky-Moriya (DM) and Kaplan …

Enhancing quantum utility: simulating large-scale quantum spin chains on superconducting quantum computers

TA Chowdhury, K Yu, MA Shamim, ML Kabir… - Physical Review …, 2024 - APS
We present the quantum simulation of the frustrated quantum spin-1 2 antiferromagnetic
Heisenberg spin chain with competing nearest-neighbor (J 1) and next-nearest-neighbor (J …

Current numbers of qubits and their uses

T Ichikawa, H Hakoshima, K Inui, K Ito… - Nature Reviews …, 2024 - nature.com
Access to quantum computers has been democratized by the availability of cloud services
from commercial providers, but the numbers of qubits users can exploit have remained …

A study on thermal quantum resources and probabilistic teleportation in spin-1/2 Heisenberg XYZ+ DM+ KSEA model under variable Zeeman splitting

A Ali, S Al-Kuwari, MT Rahim, M Ghominejad, H Ali… - Applied Physics B, 2024 - Springer
We investigate the behavior of various measures of quantum coherence and quantum
correlation in the spin-1/2 Heisenberg XYZ model with added Dzyaloshinsky-Moriya (DM) …

The localized active space method with unitary selective coupled cluster

A Mitra, R D'Cunha, Q Wang, MR Hermes… - Journal of chemical …, 2024 - ACS Publications
We introduce a hybrid quantum-classical algorithm, the localized active space unitary
selective coupled cluster singles and doubles (LAS-USCCSD) method. Derived from the …

Quantum computing with Qiskit

A Javadi-Abhari, M Treinish, K Krsulich… - arXiv preprint arXiv …, 2024 - arxiv.org
We describe Qiskit, a software development kit for quantum information science. We discuss
the key design decisions that have shaped its development, and examine the software …

IBM quantum computers: Evolution, performance, and future directions

M AbuGhanem - arXiv preprint arXiv:2410.00916, 2024 - arxiv.org
Quantum computers represent a transformative frontier in computational technology,
promising exponential speedups beyond classical computing limits. IBM Quantum has led …