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

Publications associées (9)

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

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

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

High-fidelity dimer excitations using quantum hardware

Zoë Holmes

The quantum simulation of entangled spin systems can play a central role in quantum magnetic materials discovery. Additionally, the simulation of spectroscopic signatures, such as the dynamical structure factor accessed in inelastic neutron scattering (INS ...

AMER PHYSICAL SOC2024

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

Voltage-activated parametric entangling gates based on gatemon qubits

Vladimir Manucharyan

We describe the generation of entangling gates on superconductor-semiconductor hybrid qubits by ac voltage modulation of the Josephson energy. Our numerical simulations demonstrate that the unitary error can be below 10(-5) in a variety of 75-ns-long two-q ...

American Physical Society (APS)2023

Attosecond coherent electron motion in Auger-Meitner decay

Christoph Bostedt

In quantum systems, coherent superpositions of electronic states evolve on ultrafast time scales (few femtoseconds to attoseconds; 1 attosecond = 0.001 femtoseconds = 10(-18) seconds), leading to a time-dependent charge density. Here we performed time-reso ...

American Association for the Advancement of Science2022

Heisenberg uncertainty principle as a probe of entanglement entropy: Application to superradiant quantum phase transitions

Pierre Marcel Nataf

Quantum phase transitions are often embodied by the critical behavior of purely quantum quantities such as entanglement or quantum fluctuations. In critical regions, we underline a general scaling relation between the entanglement entropy and one of the mo ...

Amer Physical Soc2012

Variational Particle Number Approach for Rational Compound Design

Ursula Röthlisberger, Anatole von Lilienfeld

Within d. functional theory, a variational particle no. approach for rational compd. design (RCD) is presented. An expression for RCD is obtained in terms of minimization of a suitably defined energy penalty functional whose gradients are the nuclear and t ...

2005