221 citations · 1.3k across the 40 of their papers we have counts for
41 papers
Spontaneous Collapse Models
Matteo Carlesso, Sandro Donadi
Collapse models are phenomenological models introduced to solve the measurement problem in quantum mechanics. They modify the Schrödinger equation by adding non-linear and stochast…
Probing the Quantum Nature of Gravity through Classical Diffusion
Oliviero Angeli, Sandro Donadi, Giovanni Di Bartolomeo +3
The question of whether gravity is fundamentally quantum remains one of the deepest open problems in modern physics. A recently explored approach consists of testing gravity's abil…
On the effectiveness of the collapse in the Diósi-Penrose model
Laria Figurato, Marco Dirindin, José Luis Gaona-Reyes +3
The possibility that gravity plays a role in the collapse of the quantum wave function has been considered in the literature, and it is of relevance not only because it would provi…
Non-interferometric rotational test of the Continuous Spontaneous Localisation model: enhancement of the collapse noise through shape optimisation
Davide Giordano Ario Altamura, Matteo Carlesso, Sandro Donadi +1
The Continuous Spontaneous Localisation (CSL) model is the most studied among collapse models, which describes the breakdown of the superposition principle for macroscopic systems.…
Efficient quantum algorithm to simulate open systems through a single environmental qubit
Giovanni Di Bartolomeo, Michele Vischi, Tommaso Feri +2
We present an efficient algorithm for simulating open quantum systems dynamics described by the Lindblad master equation on quantum computers, addressing key challenges in the fiel…
On the testability of the Károlyházy model
Laria Figurato, Angelo Bassi, Sandro Donadi
Károlyházy's original proposal, suggesting that space-time fluctuations could be a source of decoherence in space, faced a significant challenge due to an unexpectedly high emissio…
Cancellation effects as a fingerprint of quantum collapse models at atomic scale
Kristian Piscicchia, Sandro Donadi, Simone Manti +4
In this work the spontaneous electromagnetic radiation from atomic systems, induced by dynamical wave-function collapse, is investigated in the X-rays domain. Strong departures are…
A novel approach to noisy gates for simulating quantum computers
Giovanni Di Bartolomeo, Michele Vischi, Francesco Cesa +4
We present a novel method for simulating the noisy behaviour of quantum computers, which allows to efficiently incorporate environmental effects in the driven evolution implementin…
STE-QUEST -- Space Time Explorer and QUantum Equivalence principle Space Test: The 2022 medium-class mission concept
Naceur Gaaloul, Holger Ahlers, Leonardo Badurina +45
Space-borne quantum technologies, particularly those based on atom interferometry, are heralding a new era of strategic and robust space exploration. The unique conditions of space…
Light-Pulse Atom Interferometric Test of Continuous Spontaneous Localization
Sascha Vowe, Sandro Donadi, Vladimir Schkolnik +3
We investigate the effect of the Continuous Spontaneous Localization (CSL) model on light-pulse atom interferometry. Using a path-integral approach with an additional stochastic po…
Collapse dynamics are diffusive
Sandro Donadi, Luca Ferialdi, Angelo Bassi
Non-interferometric experiments have been successfully employed to constrain models of spontaneous wave function collapse, which predict a violation of the quantum superposition pr…
Present status and future challenges of non-interferometric tests of collapse models
Matteo Carlesso, Sandro Donadi, Luca Ferialdi +3
The superposition principle is the cornerstone of quantum mechanics, leading to a variety of genuinely quantum effects. Whether the principle applies also to macroscopic systems or…
Seven non-standard models coupling quantum matter and gravity
Sandro Donadi, Angelo Bassi
We review seven models, which consistently couple quantum matter and (Newtonian) gravity in a non standard way. For each of them we present the underlying motivations, the main equ…
Cold Atoms in Space: Community Workshop Summary and Proposed Road-Map
Ivan Alonso, Cristiano Alpigiani, Brett Altschul +246
We summarize the discussions at a virtual Community Workshop on Cold Atoms in Space concerning the status of cold atom technologies, the prospective scientific and societal opportu…
Underground test of gravity-related wave function collapse
S. Donadi, K. Piscicchia, C. Curceanu +3
Roger Penrose proposed that a spatial quantum superposition collapses as a back-reaction from spacetime, which is curved in different ways by each branch of the superposition. In t…
A Future-Input Dependent Path Integral for Quantum Mechanics
Sandro Donadi, Sabine Hossenfelder
We here put forward a new path-integral over Hilbert space and show that it reproduces quantum mechanics exactly. This approach works by optimizing the generating functional under…
Novel CSL bounds from the noise-induced radiation emission from atoms
Sandro Donadi, Kristian Piscicchia, Raffaele Del Grande +3
We study spontaneous radiation emission from matter, as predicted by the Continuous Spontaneous Localization (CSL) collapse model. We show that, in an appropriate range of energies…
Testing the foundations of quantum physics in space Interferometric and non-interferometric tests with Large Particles
Giulio Gasbarri, Alessio Belenchia, Matteo Carlesso +5
Quantum technologies are opening novel avenues for applied and fundamental science at an impressive pace. In this perspective article, we focus on the promises coming from the comb…
A Toy Model for Local and Deterministic Wave-function Collapse
Sandro Donadi, Sabine Hossenfelder
A local, deterministic toy model for quantum mechanics is introduced and discussed. It is demonstrated that, when averaged over the hidden variables, the model produces the same pr…
Collapse models: main properties and the state of art of the experimental tests
Matteo Carlesso, Sandro Donadi
Collapse models represent one of the possible solutions to the measurement problem. These models modify the Schrödinger dynamics with non-linear and stochastic terms, which guarant…
Optimized auxiliary oscillators for the simulation of general open quantum systems
Fabio Mascherpa, Andrea Smirne, Alejandro D. Somoza +5
A method for the systematic construction of few-body damped harmonic oscillator networks accurately reproducing the effect of general bosonic environments in open quantum systems i…
Unitary unravelling for the Dissipative Continuous Spontaneous Localization model: application to optomechanical experiments
J. Nobakht, M. Carlesso, S. Donadi +2
The Continuous Spontaneous Localization (CSL) model strives to describe the quantum-to-classical transition from the viewpoint of collapse models. However, its original formulation…
CSL Collapse Model Mapped with the Spontaneous Radiation
K. Piscicchia, A. Bassi, C. Curceanu +4
In this paper, new upper limits on the parameters of the Continuous Spontaneous Localization (CSL) collapse model are extracted. To this end, the X-ray emission data collected by t…
Underground tests of quantum mechanics. Whispers in the cosmic silence?
C. Curceanu, S. Bartalucci, A. Bassi +25
By performing X-rays measurements in the "cosmic silence" of the underground laboratory of Gran Sasso, LNGS-INFN, we test a basic principle of quantum mechanics: the Pauli Exclusio…