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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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124 papers · 1 filter
A First-Principles Thermodynamic Uncertainty Relation for Shortcuts to Adiabaticity
Guillermo Perna, Federico Centrone, Esteban Calzetta
We study the fundamental limitations of implementing time-dependent Hamiltonian protocols when ''time'' is provided by a quantum clock rather than an external classical parameter.…
Quantum-to-classical correspondence in Krylov complexity
Gastón F. Scialchi, Augusto J. Roncaglia, Diego A. Wisniacki
We study quantum-to-classical correspondence of the Krylov space for evolutions driven by unitary maps with a classical limit. This entails a proper definition of corresponding qua…
Determining the ensemble N-representability of Reduced Density Matrices
Ofelia B. Oña, Gustavo E. Massaccesi, Pablo Capuzzi +5
The N-representability problem for reduced density matrices remains a fundamental challenge in electronic structure theory. Following our previous work that employs a unitary-evolu…
Counterdiabatic ADAPT-VQE for molecular simulation
Diego Tancara, Herbert Díaz-Moraga, Dardo Goyeneche
Among variational quantum algorithms designed for NISQ devices, ADAPT-VQE stands out for its robustness against barren plateaus, particularly in estimating molecular ground states.…
A unified fidelity-based framework for quantum speed limits in open quantum systems
Tristán M. Osán, Yanet Álvarez, Mariela Portesi +1
In this work, we investigate the role of functionals of generalized fidelity measures in deriving quantum speed limits (QSLs) within a geometric approach. We establish a general th…
Quantum Resource Management in the NISQ Era: Challenges, Vision, and a Runtime Framework
Marcos Guillermo Lammers, Federico Hernán Holik, Alejandro Fernández
Quantum computers represent a radical technological advancement in the way information is processed by using the principles of quantum mechanics to solve very complex problems that…
Purcell Enhancement and Suppression in Laser Cooling of Yb:YLF Nanocrystals in a Fabry-Pérot Microcavity
Lucas Mendicino, Franco Mayo, Christian Schmiegelow +1
We investigate the improvement of anti-Stokes laser cooling of a Yb:YLF nanocrystal in a Fabry-Pérot microcavity via the Purcell effect. Our analysis accounts for both the e…
Ergotropic characterization of continuous variable entanglement
Beatriz Polo-Rodríguez, Federico Centrone, Gerardo Adesso +1
Continuous-variable quantum thermodynamics in the Gaussian regime provides a promising framework for investigating the energetic role of quantum correlations, particularly in optic…
Conserved operators and exact conditions for pair condensation
Federico Petrovich, R. Rossignoli
We determine the necessary and sufficient conditions which ensure that an -particle fermionic or bosonic state has the form , wher…
Degrees of Entanglement in Systems of Three Indistinguishable Bosons: Revisiting the Greenberger-Horne-Zeilinge State
P. Céspedes, F. H. Holik, A. P. Majtey
While the concept of entanglement for distinguishable particles is well established, defining entanglement and non-locality in systems of indistinguishable particles, which require…
Enhancing the efficiency of quantum measurement-based engines with entangling measurements
Franco Mayo, Augusto J. Roncaglia
We study the impact of entangling measurements on the efficiency of quantum measurement- based engines. We first show that for engines comprising many subsystems their efficiency c…
Self-testing tilted strategies for maximal loophole-free nonlocality
Nicolas Gigena, Ekta Panwar, Giovanni Scala +3
The degree of experimentally attainable nonlocality, as gauged by the loophole-free or effective violation of Bell inequalities, remains severely limited due to inefficient detecto…
Distribution of Non-Locality On Quantum Random Circuits
Andrés Camilo Granda Arango, Federico Hernán Holik, Roberto Giuntini +2
In this work we explore how different types of resources are distributed among the states generated by quantum random circuits (QRC). We focus on multipartite non-locality, but we…
On the eigenvalues of the harmonic oscillator with a Gaussian perturbation
Paolo Amore, Francisco M. Fernández, Javier Garcia
We test the analytical expressions for the first two eigenvalues of the harmonic oscillator with a Gaussian perturbation proposed recently. Our numerical eigenvalues show that thos…
Challenges in certifying quantum teleportation: moving beyond conventional fidelity benchmark
D. G. Bussandri, G. M. Bosyk, F. Toscano
The conventional certification method for quantum teleportation protocols relies on surpassing the highest achievable classical average fidelity between target and teleported state…
A note on degeneracy of excited energy levels in massless Dirac fermions
Lucas Sourrouille
We propose a mechanism to construct the eigenvalues and eigenfunctions of the massless Dirac-Weyl equation in the presences of magnetic flux localized in a restricted region of…
Does provable absence of barren plateaus imply classical simulability?
M. Cerezo, Martin Larocca, Diego García-Martín +9
A large amount of effort has recently been put into understanding the barren plateau phenomenon. In this perspective article, we face the increasingly loud elephant in the room and…
Covariance-based method for eigenstate factorization and generalized singlets
Federico Petrovich, R. Rossignoli, N. Canosa
We derive a general method for determining the necessary and sufficient conditions for exact factorization of an eigenstate of a many-body Hamilto…
Optimal quantum teleportation protocols for fixed average fidelity
Fabricio Toscano, Diego G. Bussandri, Gustavo M. Bosyk +2
We demonstrate that among all quantum teleportation protocols giving rise to the same average fidelity, those with aligned Bloch vectors between input and output states exhibit the…
Rényi-Holevo inequality from --Rényi relative entropies
Diego G. Bussandri, Grzegorz Rajchel-Mieldzioć, Pedro W. Lamberti +1
We investigate bounds in the transmission of classical information through quantum systems. Our focus lies in the generalized Holevo theorem, which provides a single-letter Holevo-…
Parallel-in-time quantum simulation via Page and Wootters quantum time
N. L. Diaz, Paolo Braccia, Martin Larocca +3
In the past few decades, researchers have created a veritable zoo of quantum algorithms by drawing inspiration from classical computing, information theory, and even from physical…
Phase transitions and thermodynamic cycles in the broken PT-regime
Andreas Fring, Marta Reboiro
We propose a new type of quantum thermodynamic cycle whose efficiency is greater than the one of the classical Carnot cycle for the same conditions for a system when viewed as homo…
Transmission distance in the space of quantum channels
Diego G. Bussandri, Pedro W. Lamberti, Karol Życzkowski
We analyze two ways to obtain distinguishability measures between quantum maps by employing the square root of the quantum Jensen-Shannon divergence, which forms a true distance in…
Parameterizing density operators with arbitrary symmetries to gain advantage in quantum state estimation
Inés Corte, Marcelo Losada, Diego Tielas +2
In this work, we show how to parameterize a density matrix that has an arbitrary symmetry, knowing the generators of the Lie algebra (if the symmetry group is a connected Lie group…