251 citations · 1.8k across the 79 of their papers we have counts for
14 papers · 1 filter
Genuine quantum non-Gaussianity and metrological sensitivity of Fock states prepared in a mechanical resonator
Q. Rumman Rahman, Igor Kladarić, Max-Emanuel Kern +4
Fock states of the quantum harmonic oscillator are fundamental to quantum sensing and information processing, serving as key resources for exploiting bosonic degrees of freedom. He…
Quantum teleportation of cat states with binary-outcome measurements
Jingyan Feng, Mohan Zhang, Matteo Fadel +1
We propose a teleportation protocol involving beam splitting operations and binary-outcome measurements, such as parity measurements. These operations have a straightforward implem…
Quantum gravitational decoherence of a mechanical oscillator from spacetime fluctuations
Sandro Donadi, Matteo Fadel
We consider the scenario of a fluctuating spacetime due to a deformed commutation relation with a fluctuating deformation parameter, or to a fluctuating metric tensor. By computing…
Theory-independent monitoring of the decoherence of a superconducting qubit with generalized contextuality
Albert Aloy, Matteo Fadel, Thomas D. Galley +2
Characterizing the nonclassicality of quantum systems under minimal assumptions is an important challenge for quantum foundations and technology. Here we introduce a theory-indepen…
Quantum metrology with a continuous-variable system
Matteo Fadel, Noah Roux, Manuel Gessner
As one of the main pillars of quantum technologies, quantum metrology aims to improve measurement precision using techniques from quantum information. The two main strategies to ac…
Quantum entanglement in phase space
Shuheng Liu, Jiajie Guo, Qiongyi He +1
While commonly used entanglement criteria for continuous variable systems are based on quadrature measurements, here we study entanglement detection from measurements of the Wigner…
Characterizing the Multipartite Entanglement Structure of Non-Gaussian Continuous-Variable States with a Single Evolution Operator
Mingsheng Tian, Xiaoting Gao, Boxuan Jing +4
Multipartite entanglement is an essential resource for quantum information tasks, but characterizing entanglement structures in continuous variable systems remains challenging, esp…
Three-outcome multipartite Bell inequalities: applications to dimension witnessing and spin-nematic squeezing in many-body systems
Guillem Müller-Rigat, Albert Aloy, Maciej Lewenstein +2
We present a three-outcome Bell inequality which we show to be naturally suited to explore nonlocal correlations in many-body spin-1 systems or SU(3) models. In the specific, we de…
Deriving three-outcome permutationally invariant Bell inequalities
Albert Aloy, Guillem Müller-Rigat, Jordi Tura +1
We present strategies to derive Bell inequalities valid for systems composed of many three-level parties. This scenario is formalized by a Bell experiment with observers, each…
Effective Faraday interaction between light and nuclear spins of Helium-3 in its ground state: a semiclassical study
Matteo Fadel, Philipp Treutlein, Alice Sinatra
We derive the semiclassical evolution equations for a system consisting of helium-3 atoms in the metastable state interacting with a light field far-detuned from the $2^3S-2…
Quantum metrology with a squeezed Kerr oscillator
Jiajie Guo, Qiongyi He, Matteo Fadel
We study the squeezing dynamics in a Kerr-nonlinear oscillator, and quantify the metrological usefulness of the resulting states. Even if the nonlinearity limits the attainable squ…
A mechanical qubit
Yu Yang, Igor Kladaric, Maxwell Drimmer +6
Strong nonlinear interactions between quantized excitations are an important resource for quantum technologies based on bosonic oscillator modes. However, most electromagnetic and…
Manipulating Spectral Windings and Skin Modes through Nonconservative Couplings
Ningxin Kong, Chenghe Yu, Yilun Xu +3
The discovery of the non-Hermitian skin effect (NHSE) has revolutionized our understanding of wave propagation in non-Hermitian systems, highlighting unexpected localization effect…
Nonlocality, Integrability and Quantum Chaos in the Spectrum of Bell Operators
Albert Aloy, Guillem Müller-Rigat, Maciej Lewenstein +2
We introduce a permutationally invariant multipartite Bell inequality for many-body three-level systems and use it to investigate a connection between Bell nonlocality and (lack of…