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quant-ph2025

Operator Entanglement from Non-Commutative Symmetries

Michele Arzano, Goffredo Chirco

We argue that Hopf-algebra deformations of symmetries -- as encountered in non-commutative models of quantum spacetime -- carry an intrinsic content of th…

quant-ph2025

Van Hove singularities in stabilizer entropy densities

Daniele Iannotti, Lorenzo Campos Venuti, Alioscia Hamma

The probability distribution of a measure of non-stabilizerness, also known as magic, is investigated for Haar-random pure quantum states. Focusing on the stabilizer Rényi entropie…

quant-ph2025

Liouvillian Exceptional Points in Quantum Brickwork Circuits

Vladislav Popkov, Mario Salerno

We demonstrate that Liouvillian exceptional points (LEPs), previously explored only in continuous Lindbladian dynamics, also emerge in discrete brickwork completely positive trace-…

quant-ph2025

Classical and quantum chaotic synchronization in coupled dissipative time crystals

Eliška Postavová, Gianluca Passarelli, Procolo Lucignano +1

We investigate the dynamics of two coherently coupled dissipative time crystals. In the classical mean-field limit of infinite spin length, we identify a regime of chaotic synchron…

quant-ph2025★ 2 cited

Quantum Fisher information as a witness of non-Markovianity and criticality in the spin-boson model

Daniele Parlato, Grazia Di Bello, Fabrizio Pavan +2

The quantum Fisher information, the quantum analogue of the classical Fisher information, is a central quantity in quantum metrology and quantum sensing due to its connection to pa…

quant-ph2025

Complex orientation dependence of Casimir-Polder interaction induced by curvature and optical properties of the surface and the surrounding medium

Giuseppe Bimonte, Thorsten Emig

We employ a multiple scattering expansion to systematically derive curvature corrections to the Casimir-Polder (CP) interaction between small an-isotropic particles and general mag…

quant-ph2025★ 4 cited

Non-Clifford Cost of Random Unitaries

Lorenzo Leone, Salvatore F. E. Oliviero, Alioscia Hamma +2

Recent years have enjoyed a strong interest in exploring properties and applications of random quantum circuits. In this work, we explore the ensemble of -doped Clifford circuit…

quant-ph2025★ 3 cited

High-Dimensional Quantum Key Distribution with Qubit-like States

Lukas Scarfe, Rojan Abolhassani, Frédéric Bouchard +4

Quantum key distribution (QKD) protocols most often use two conjugate bases in order to verify the security of the quantum channel. In the majority of protocols, these bases are mu…

quant-ph2025★ 1 cited

Quantum Galilei group as quantum reference frame transformations

Angel Ballesteros, Diego Fernandez-Silvestre, Flaminia Giacomini +1

Quantum groups have been widely explored as a tool to encode possible nontrivial generalisations of reference frame transformations, relevant in quantum gravity. In quantum informa…

quant-ph2025

Multiphoton quantum simulation of the generalized Hopfield memory model

Gennaro Zanfardino, Stefano Paesani, Luca Leuzzi +5

In the present work, we introduce, develop, and investigate a connection between multiphoton quantum interference, a core element of emerging photonic quantum technologies, and Hop…

quant-ph2025★ 5 cited

Local ergotropy dynamically witnesses many-body localized phases

Francesco Formicola, Grazia Di Bello, Giulio De Filippis +3

Many-body localization is a dynamical phenomenon characteristic of strongly interacting and disordered many-body quantum systems which fail to achieve thermal equilibrium. From a q…

quant-ph2025★ 10 cited

Interplay of entanglement structures and stabilizer entropy in spin models

Michele Viscardi, Marcello Dalmonte, Alioscia Hamma +1

Understanding the interplay between nonstabilizerness and entanglement is crucial for uncovering the fundamental origins of quantum complexity. Recent studies have proposed entangl…

quant-ph2025★ 3 cited

Continuous Variable Structured Collision Models

Anton Corr, Stefano Cusumano, Gabriele De Chiara

Quantum collision models allow for the dynamics of open quantum systems to be described by breaking the environment into small segments, typically consisting of non-interacting har…

quant-ph2025★ 3 cited

Proposal to measure the Casimir Effect Across the Superconducting Transition

Giuseppe Bimonte

The influence of the superconducting transition on the Casimir effect remains experimentally elusive. We propose a novel approach to address this challenge, exploiting the first-or…

quant-ph2025★ 1 cited

Casimir force inadequacy in explaining a strong attractive force in a micrometer-sized narrow-gap re-entrant cavity

Giuseppe Bimonte

Pate et al. \cite{pate} investigated a macroscopic opto-mechanical system with a narrow-gap re-entrant cavity coupled to a SiN membrane resonator coated with Au or Nb. They observe…

quant-ph2025★ 19 cited

Stabilizer Entropy and entanglement complexity in the Sachdev-Ye-Kitaev model

Barbara Jasser, Jovan Odavić, Alioscia Hamma

The Sachdev-Ye-Kitaev (SYK) model is of paramount importance for the understanding of both strange metals and a microscopic theory of two-dimensional gravity. We study the interpla…

quant-ph2025★ 2 cited

Long-distance genuine multipartite Entanglement between Magnetic Defects in Spin Chains

Mirko Consiglio, Jovan Odavić, Riccarda Bonsignori +5

We investigate the emergence and properties of long-distance genuine multipartite entanglement, induced via three localized magnetic defects, in a one-dimensional transverse-field…

quant-ph2025★ 16 cited

Entanglement and Stabilizer entropies of random bipartite pure quantum states

Daniele Iannotti, Gianluca Esposito, Lorenzo Campos Venuti +1

The interplay between non-stabilizerness and entanglement in random states is a very rich arena of study for the understanding of quantum advantage and complexity. In this work, we…