249 citations · 1.2k across the 40 of their papers we have counts for
43 papers
Quantum control of solid state qubits via Reinforcement Learning
Dennis Herb, Mirko Rossini, Sabine Wölk +3
The use of reinforcement learning (RL) in the design of quantum control strategies for pulse level control of NISQ era quantum devices is attracting growing interest. Model-free RL…
Quantum Metrology of Newton's Constant with Levitated Mechanical Systems
Francis J. Headley, Alessio Belenchia, Mauro Paternostro +1
Newton's constant is the least well-measured among the fundamental constants of Nature, and, indeed, its accurate measurement has long served an experimental challenge. Levitated m…
Interferometry of quantum correlation functions to access quasiprobability distribution of work
Santiago Hernández-Gómez, Takuya Isogawa, Alessio Belenchia +4
The Kirkwood-Dirac quasiprobability distribution, intimately connected with the quantum correlation function of two observables measured at distinct times, is becoming increasingly…
Quantum gravity inspired nonlocal quantum dynamics preserving the classical limit
Marzena Ciszak, Alessio Belenchia, Antonello Ortolan +1
Several approaches to quantum gravity lead to nonlocal modifications of fields' dynamics. This, in turn, can give rise to nonlocal modifications of quantum mechanics at non-relativ…
Non-linear media in weakly curved spacetime: optical solitons and probe pulses for gravimetry
Alessio Belenchia, Felix Spengler, Dennis Rätzel +1
That light propagating in a gravitational field gets frequency-shifted is one of the basic consequences of any metric theory of gravity rooted in the equivalence principle. At the…
Nanoparticle Interferometer by Throw and Catch
Jakub Wardak, Tiberius Georgescu, Giulio Gasbarri +2
Matter-wave interferometry with increasingly larger masses could pave the way to understanding the nature of wavefunction collapse, the quantum to classical transition or even how…
Non-equilibrium quantum probing through linear response
Sherry Blair, Giorgio Zicari, Alessio Belenchia +2
The formalism of linear response theory can be extended to encompass physical situations where an open quantum system evolves towards a non-equilibrium steady-state. Here, we use t…
Optomechanics-based quantum estimation theory for collapse models
Marta Maria Marchese, Alessio Belenchia, Mauro Paternostro
We make use of the powerful formalism of quantum parameter estimation to assess the characteristic rates of a Continuous Spontaneous Localisation (CSL) model affecting the motion o…
Optical solitons in curved spacetime
Felix Spengler, Alessio Belenchia, Dennis Rätzel +1
Light propagation in curved spacetime is at the basis of some of the most stringent tests of Einstein's general relativity. At the same time, light propagation in media is at the b…
Diagnostics of quantum-gate coherences via end-point-measurement statistics
Ilaria Gianani, Alessio Belenchia, Stefano Gherardini +3
Quantum coherence is a central ingredient in quantum physics with several theoretical and technological ramifications. In this work we consider a figure of merit encoding the infor…
Projective measurements can probe non-classical work extraction and time-correlations
Santiago Hernández-Gómez, Stefano Gherardini, Alessio Belenchia +3
We demonstrate an experimental technique to characterize genuinely nonclassical multi-time correlations using projective measurements with no ancillae. We implement the scheme in a…
Kirkwood-Dirac quasiprobability approach to the statistics of incompatible observables
Matteo Lostaglio, Alessio Belenchia, Amikam Levy +3
Recent work has revealed the central role played by the Kirkwood-Dirac quasiprobability (KDQ) as a tool to properly account for non-classical features in the context of condensed m…
Linear-response approach to critical quantum many-body systems
Ricardo Puebla, Alessio Belenchia, Giulio Gasbarri +2
The characterization of quantum critical phenomena is pivotal for the understanding and harnessing of quantum many-body physics. However, their complexity makes the inference of su…
MAQRO -- BPS 2023 Research Campaign Whitepaper
Rainer Kaltenbaek, Markus Arndt, Markus Aspelmeyer +43
The objective of the proposed MAQRO mission is to harness space for achieving long free-fall times, extreme vacuum, nano-gravity, and cryogenic temperatures to test the foundations…
Influence of cosmological expansion in local experiments
Felix Spengler, Alessio Belenchia, Dennis Rätzel +1
Whether the cosmological expansion can influence the local dynamics, below the galaxy clusters scale, has been the subject of intense investigations in the past three decades. In t…
Open Quantum Rotors: Connecting Correlations and Physical Currents
Ricardo Puebla, Alberto Imparato, Alessio Belenchia +1
We consider a finite one-dimensional chain of quantum rotors interacting with a set of thermal baths at different temperatures. When the interaction between the rotors is made chir…
Quantum Physics in Space
Alessio Belenchia, Matteo Carlesso, Ömer Bayraktar +17
Advances in quantum technologies are giving rise to a revolution in the way fundamental physics questions are explored at the empirical level. At the same time, they are the seeds…
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…
Informational steady-states and conditional entropy production in continuously monitored systems: the case of Gaussian systems
Alessio Belenchia, Mauro Paternostro, Gabriel T. Landi
The act of measuring a system has profound consequences of dynamical and thermodynamic nature. In particular, the degree of irreversibility ensuing from a non-equilibrium process i…
Informational steady-states and conditional entropy production in continuously monitored systems
Gabriel T. Landi, Mauro Paternostro, Alessio Belenchia
We put forth a unifying formalism for the description of the thermodynamics of continuously monitored systems, where measurements are only performed on the environment connected to…
An Optomechanical Platform for Quantum Hypothesis Testing for Collapse Models
Marta Maria Marchese, Alessio Belenchia, Stefano Pirandola +1
Quantum Hypothesis Testing has shown the advantages that quantum resources can offer in the discrimination of competing hypothesis. Here, we apply this framework to optomechanical…
Prospects for near-field interferometric tests of Collapse Models
Giulio Gasbarri, Alessio Belenchia, Mauro Paternostro +1
Near-field interferometry with large dielectric nano-particles opens the way to test fundamental modification of standard quantum mechanics at an unprecedented level. We showcase t…
Experimental assessment of entropy production in a continuously measured mechanical resonator
Massimiliano Rossi, Luca Mancino, Gabriel T. Landi +3
The information on a quantum process acquired through measurements plays a crucial role in the determination of its non-equilibrium thermodynamic properties. We report on the exper…
Quantum Temporal Superposition: the case of QFT
Laura J. Henderson, Alessio Belenchia, Esteban Castro-Ruiz +4
Quantum field theory is completely characterized by the field correlations between spacetime points. In turn, some of these can be accessed by locally coupling to the field simple…