Publications associées à High-fidelity dimer excitations using quantum hardware

Publications associées (10)

On-chip Germanium nanowires for hole spin qubits

The creation of a universal quantum computer that can solve complex problems beyond the reach of classical computers - the so-called "quantum supremacy" - is an open challenge. For this to become a reality, a large number of qubits should be integrated in ...

EPFL2025

Landau–Zener without a qubit: multiphoton sidebands interaction and signatures of dissipative quantum chaos

Vincenzo Savona, Pasquale Scarlino, Fabrizio Minganti, Marco Scigliuzzo, Vincent Jean Yves Jouanny, Filippo Ferrari, Léo Paul Peyruchat

Landau–Zener–Stückelberg–Majorana (LZSM) interference occurs when qubit parameters are periodically modulated across avoided level crossings. We explore this phenomenon in nonlinear multilevel bosonic systems, where interference is influenced by multiple e ...

2025

Integration of Cobalt Ferromagnetic Control Gates for Electrical and Magnetic Manipulation of Semiconductor Quantum Dots

Mihai Adrian Ionescu, Victor Carle Adrien Boureau, Pasquale Scarlino, Michele Ghini, Fabio Bersano, Niccolò Martinolli

The rise of electron spin qubit architectures for quantum computing processors has led to a strong interest in designing and integrating ferromagnets to induce stray magnetic fields for electron dipole spin resonance (EDSR). The integration of nanomagnets ...

Wiley2025

Barren plateaus in variational quantum computing

Zoë Holmes, Thanasilp Supanut

Variational quantum computing offers a flexible computational approach with a broad range of applications. However, a key obstacle to realizing their potential is the barren plateau (BP) phenomenon. When a model exhibits a BP, its parameter optimization la ...

NATURE PORTFOLIO2025

Magnons from time-dependent density-functional perturbation theory and nonempirical Hubbard functionals

Nicola Marzari, Luca Binci

Spin excitations play a fundamental role in understanding magnetic properties of materials, and have significant technological implications for magnonic devices. However, accurately modeling these in transition-metal and rare-earth compounds remains a form ...

2025

Challenges and Opportunities in Quantum Optimization

Julien Sebastian Gacon

Quantum computers have demonstrable ability to solve problems at a scale beyond brute-force classical simulation. Interest in quantum algorithms has developed in many areas, particularly in relation to mathematical optimization - a broad field with links t ...

NATURE PORTFOLIO2024

Weyl spin-momentum locking in a chiral topological semimetal

Jan Hugo Dil, Eduardo Bonini Guedes

Spin-orbit coupling in noncentrosymmetric crystals leads to spin-momentum locking - a directional relationship between an electron's spin angular momentum and its linear momentum. Isotropic orthogonal Rashba spin-momentum locking has been studied for decad ...

NATURE PORTFOLIO2024

Fluxonium qubits in a flip-chip package

Vladimir Manucharyan

The strong anharmonicity and high coherence times inherent to fluxonium superconducting circuits are beneficial for quantum information processing. In addition to requiring high-quality physical qubits, a quantum processor needs to be assembled in a manner ...

American Physical Society (APS)2024

Exact Sampling for Classical and Quantum Many-Body Systems

Dian Wu

Many-body systems at low temperature have revealed non-trivial phases of materials, such as spin liquids, which have found applications in the evolving fields of superconductivity, nanoelectronics, and quantum computing. Their exponentially large state spa ...

EPFL2024

Decoherence in a crystal-phase defined double quantum dot charge qubit strongly coupled to a high-impedance resonator

Pasquale Scarlino

Decoherence of a charge qubit is usually credited to charge noise in the environment. Here we show that charge noise may not be the limiting factor for the qubit coherence. To this end, we study coherence properties of a crystal-phase defined semiconductor ...

2024