163 citations · 3.3k across the 109 of their papers we have counts for
23 papers · 1 filter
Transitions to super-radiance in ensembles of incoherently pumped emitters
Laszlo Rassaert, Tommaso Roscilde
Super-radiance is a striking phenomenon resulting from the collective interaction of emitters with light, and it is fundamentally related to the appearance of long-range correlatio…
Universal spin-squeezing dynamics in spinor condensates
Nikolaos Giovanoudis, Navid Kazemiseresht, Fabio Mezzacapo +2
The production of large-scale entangled states is one of the main goals of next-generation quantum technologies, with an immediate potential for applications in the context of enta…
Exponential onset of scalable entanglement via twist-and-turn dynamics in XY models
Tommaso Roscilde, Meenu Kumari, Alexandre Cooper +1
The efficient preparation of scalable multipartite entanglement is a central goal in the development of next-generation quantum devices. In this work, we show that the so-called ``…
Tomonaga-Luttinger Liquid Behavior in a Rydberg-encoded Spin Chain
Gabriel Emperauger, Mu Qiao, Cheng Chen +14
Quantum fluctuations can disrupt long-range order in one-dimensional systems, and replace it with the universal paradigm of the Tomonaga-Luttinger liquid (TLL), a critical phase of…
Emerging Non-Hermitian Topology in a Chiral Driven-Dissipative Bose-Hubbard Model
Laszlo Rassaert, Tomás Ramos, Tommaso Roscilde +1
We introduce a driven-dissipative Bose-Hubbard chain describing coupled lossy photonic modes, in which time-reversal symmetry is broken by a coherent drive with a uniform phase gra…
Symmetry: a fundamental resource for quantum coherence and metrology
Irénée Frérot, Tommaso Roscilde
We introduce a new paradigm for the preparation of deeply entangled states useful for quantum metrology. We show that when the quantum state is an eigenstate of an operator , ob…
Scalable spin squeezing from critical slowing down in short-range interacting systems
Tommaso Roscilde, Filippo Caleca, Adriano Angelone +1
Long-range spin-spin interactions are known to generate non-equilibrium dynamics which can squeeze the collective spin of a quantum spin ensemble in a scalable manner, leading to s…
Quantum correlations in the steady state of light-emitter ensembles from perturbation theory
Dolf Huybrechts, Tommaso Roscilde
The coupling of a quantum system to an environment leads generally to decoherence, and it is detrimental to quantum correlations within the system itself. Yet some forms of quantum…
Quantum degeneracy and spin entanglement in ideal quantum gases
Fatma Zouari Ahmed, Mohammed Tayeb Meftah, Tommaso Roscilde
Quantum degeneracy is the central many-body feature of ideal quantum gases stemming from quantum mechanics. In this work we address its relationship to the most fundamental form of…
Scalable spin squeezing in two-dimensional arrays of dipolar large- spins
Youssef Trifa, Tommaso Roscilde
Controlling the quantum many-body state of arrays of qudits, possessing a large local Hilbert space, opens the path to a broad range of possibilities for many-particle entanglement…
Scalable spin squeezing in a dipolar Rydberg atom array
Guillaume Bornet, Gabriel Emperauger, Cheng Chen +11
The standard quantum limit bounds the precision of measurements that can be achieved by ensembles of uncorrelated particles. Fundamentally, this limit arises from the non-commuting…
Entangling dynamics from effective rotor/spin-wave separation in U(1)-symmetric quantum spin models
Tommaso Roscilde, Tommaso Comparin, Fabio Mezzacapo
The non-equilibrium dynamics of quantum spin models is a most challenging topic, due to the exponentiality of Hilbert space; and it is central to the understanding of the many-body…
Entanglement complexity of the Rokhsar-Kivelson-sign wavefunctions
Stefano Piemontese, Tommaso Roscilde, Alioscia Hamma
In this paper we study the transitions of entanglement complexity in an exemplary family of states - the Rokhsar-Kivelson-sign wavefunctions - whose degree of entanglement is contr…
Quantum and classical correlations in open quantum-spin lattices via truncated-cumulant trajectories
Wouter Verstraelen, Dolf Huybrechts, Tommaso Roscilde +1
The study of quantum many-body physics in Liouvillian open quantum systems becomes increasingly important with the recent progress in experimental control on dissipative systems an…
Multipartite entangled states in dipolar quantum simulators
Tommaso Comparin, Fabio Mezzacapo, Tommaso Roscilde
The scalable production of multipartite entangled states in ensembles of qubits is a fundamental function of quantum devices, as such states are an essential resource both for fund…
Scalable spin squeezing from spontaneous breaking of a continuous symmetry
Tommaso Comparin, Fabio Mezzacapo, Martin Robert-de-Saint-Vincent +1
Spontaneous symmetry breaking (SSB) is a property of Hamiltonian equilibrium states which, in the thermodynamic limit, retain a finite average value of an order parameter even afte…
Spin squeezing from bilinear spin-spin interactions: two simple theorems
Tommaso Roscilde, Fabio Mezzacapo, Tommaso Comparin
We demonstrate two simple theorems about squeezing induced by bilinear spin-spin interactions that conserve spin parity -- including a vast majority of quantum spin models implemen…
Optimal entanglement witnesses: a scalable data-driven approach
Irénée Frérot, Tommaso Roscilde
Multipartite entanglement is the key resource allowing quantum devices to outperform their classical counterparts, and entanglement certification is fundamental to assess any quant…
Detecting many-body Bell non-locality by solving Ising models
Irénée Frérot, Tommaso Roscilde
Bell non-locality represents the ultimate consequence of quantum entanglement, fundamentally undermining the classical tenet that spatially-separated degrees of freedom possess obj…
Quantum critical metrology
Irénée Frérot, Tommaso Roscilde
Quantum metrology fundamentally relies upon the efficient management of quantum uncertainties. We show that, under equilibrium conditions, the management of quantum noise becomes e…
Scaling Behavior of Entanglement in Two- and Three-Dimensional Free Fermions
Weifei Li, Letian Ding, Rong Yu +2
Exactly solving a spinless fermionic system in two and three dimensions, we investigate the scaling behavior of the block entropy in critical and non-critical phases. The scaling o…
Entanglement and factorized ground states in two-dimensional quantum antiferromagnets
Tommaso Roscilde, Paola Verrucchi, Andrea Fubini +2
Making use of exact results and quantum Monte Carlo data for the entanglement of formation, we show that the ground state of anisotropic two-dimensional S=1/2 antiferromagnets in a…
Entanglement in quantum critical spin systems
Tommaso Roscilde, Paola Verrucchi, Andrea Fubini +2
We study the field dependence of the entanglement of formation in anisotropic S=1/2 antiferromagnetic chains and two-leg ladders displaying a T=0 field-driven quantum phase transit…