S. Vallecorsa

On a poset of quantum exact promise problems

2021 · Quantum Information Processing

Abstract Two of the most well-known quantum algorithms, those introduced by Deutsch–Jozsa and Bernstein–Vazirani, can solve promise problems with just one function query, showing an oracular separation with deterministic classical algorithms. In this work, we …

Hybrid quantum classical graph neural networks for particle track reconstruction

2021 · Quantum Machine Intelligence

Abstract The Large Hadron Collider (LHC) at the European Organisation for Nuclear Research (CERN) will be upgraded to further increase the instantaneous rate of particle collisions (luminosity) and become the High Luminosity LHC (HL-LHC). This …

IBM Quantum Platforms: A Quantum Battery Perspective

2022 · CINECA IRIS Institutial Research Information System (University of Genoa)

We characterize for the first time the performances of IBM quantum chips as quantum batteries, specifically addressing the single-qubit Armonk processor. By exploiting the Pulse access enabled to some of the IBM Quantum processors via …

Counterdiabatic optimized driving in quantum phase sensitive models

2023 · arXiv (Cornell University)

State preparation plays a pivotal role in numerous quantum algorithms, including quantum phase estimation. This paper extends and benchmarks counterdiabatic driving protocols across three one-dimensional spin systems characterized by phase transitions: the axial next-nearest neighbor …