Publications de Pasquale Scarlino

Observation of first- and second-order dissipative phase transitions in a two-photon driven Kerr resonator

Vincenzo Savona, Pasquale Scarlino, Fabrizio Minganti, Simone Frasca, Guillaume Beaulieu

In open quantum systems, dissipative phase transitions (DPTs) emerge from the interplay between unitary evolution, drive, and dissipation. While second-order DPTs have been predominantly investigated theoretically, first-order DPTs have been observed in si ...

2025

Criticality-Enhanced Quantum Sensing with a Parametric Superconducting Resonator

Pasquale Scarlino, Fabrizio Minganti, Simone Frasca, Marco Scigliuzzo, Guillaume Beaulieu

Quantum metrology, a cornerstone of quantum technologies, exploits entanglement and superposition to achieve higher precision than classical protocols in parameter-estimation tasks. When combined with critical phenomena such as phase transitions, the diver ...

American Physical Society (APS)2025

A dephasing sweet spot with enhanced dipolar coupling

Pasquale Scarlino

Two-level systems (TLSs) are the basic units of quantum computers but face a trade-off between operation speed and coherence due to shared coupling paths. Here, we investigate a TLS given by a singlet-triplet (ST+) transition. We identify a magnetic-field ...

2025

Entangled Photon-Pair Emission in Waveguide Circuit QED from a Cooper Pair Splitter

Pasquale Scarlino

As a waveguide circuit QED architecture, we investigate theoretically the single-photon pair emission of a Cooper pair splitter composed of two double quantum dots, each coupled to a microwave transmission line. We find that this system can generate freque ...

American Physical Society (APS)2025

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

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

High kinetic inductance cavity arrays for compact band engineering and topology-based disorder meters

Pasquale Scarlino, Simone Frasca, Marco Scigliuzzo, Guillaume Beaulieu, Vincent Jean Yves Jouanny, Fabian Oppliger

Superconducting microwave metamaterials offer enormous potential for quantum optics and information science, enabling the development of advanced quantum technologies for sensing and amplification. In the context of circuit quantum electrodynamics, such me ...

2025

Dissipative quantum chaos unveiled by stochastic quantum trajectories

Vincenzo Savona, Pasquale Scarlino, Fabrizio Minganti, Luca Gravina, Debbie Eeltink

We define quantum chaos and integrability in open quantum many-body systems as a dynamical property of single stochastic realizations, referred to as quantum trajectories. This definition relies on the predictions of random matrix theory applied to the sub ...

AMER PHYSICAL SOC2025

Integration of Cobalt Ferromagnetic Control Gates for Electrical and Magnetic Manipulation of Semiconductor Quantum Dots (Adv. Funct. Mater. 14/2025)

Mihai Adrian Ionescu, Pasquale Scarlino, Victor Carle Adrien Boureau, Michele Ghini

Wiley2025

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

Mihai Adrian Ionescu, Pasquale Scarlino, Victor Carle Adrien Boureau, Michele Ghini

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

Demonstration of Microwave Resonators and Double Quantum Dots on Optimized Reverse-Graded Ge/SiGe Heterostructures

Pasquale Scarlino, Fabian Oppliger

One of the most promising platforms for the realization of spin-based quantum computing are planar germanium quantum wells embedded between silicon-germanium barriers. To achieve comparably thin stacks with little surface roughness, this type of heterostru ...

2024