Experimental activation of strong local passive states with quantum information

NA Rodríguez-Briones, H Katiyar, E Martín-Martínez… - Physical Review Letters, 2023 - APS
Strong local passivity is a property of multipartite quantum systems from which it is
impossible to extract energy locally. Surprisingly, if the strong local passive state displays …

[HTML][HTML] Controlling NMR spin systems for quantum computation

JA Jones - Progress in Nuclear Magnetic Resonance …, 2024 - Elsevier
Nuclear magnetic resonance is arguably both the best available quantum technology for
implementing simple quantum computing experiments and the worst technology for building …

Exploiting landscape geometry to enhance quantum optimal control

M Larocca, E Calzetta, DA Wisniacki - Physical Review A, 2020 - APS
The successful application of quantum optimal control (QOC) over the past decades has
unlocked the possibility of directing the dynamics of quantum systems. Nevertheless …

Extending NMR Quantum Computation Systems by Employing Compounds with Several Heavy Metals as Qubits

JBR Lino, MA Gonçalves, SPA Sauer, TC Ramalho - Magnetochemistry, 2022 - mdpi.com
Nuclear magnetic resonance (NMR) is a spectroscopic method that can be applied to
several areas. Currently, this technique is also being used as an experimental quantum …

Investigating the individual performances of coupled superconducting transmon qubits

HG Ahmad, C Jordan, R van den Boogaart… - Condensed …, 2023 - mdpi.com
The strong requirement for high-performing quantum computing led to intensive research on
novel quantum platforms in the last decades. The circuital nature of Josephson-based …

Characterization of overparametrization in the simulation of realistic quantum systems

M Duschenes, J Carrasquilla, R Laflamme - Physical Review A, 2024 - APS
Quantum computing devices require exceptional control of their experimental parameters to
prepare quantum states and simulate other quantum systems. Classical optimization …

Implementation of a quantum engine fuelled by information

JPS Peterson, RS Sarthour, R Laflamme - arxiv preprint arxiv:2006.10136, 2020 - arxiv.org
Here, we show the implementation of a complete cycle of a quantum engine fuelled by
information. This engine is a quantum version of the Szilard engine, where information is …

Amplitude-modulated mirror pulses for improved cold-atom gravimetry

Y Wang, J Cheng, Y Liu, T Lin - Physical Review A, 2024 - APS
Cold-atom gravimetry is susceptible to environmental factors and noise resulting from the
expansion of the atom cloud, thereby impacting the quality of gravity signals. An amplitude …

Development of Neural Network-Based Optimal Control Pulse Generator for Quantum Logic Gates Using the GRAPE Algorithm in NMR Quantum Computer

E Khaleghian, AF Lipaei, A Bahrampour… - arxiv preprint arxiv …, 2024 - arxiv.org
In this paper, we introduce a neural network to generate the optimal control pulses for
general single-qubit quantum logic gates, within a Nuclear Magnetic Resonance (NMR) …

[HTML][HTML] Quantum simulation of the two-site Hubbard Hamiltonian

FV Melo, AM Souza, IS Oliveira, RS Sarthour - Physics Open, 2021 - Elsevier
We present an experimental quantum simulation of the two-site Hubbard Hamiltonian, using
the NMR technique. By varying the ratio between the Coulomb interaction U and the kinetic …