1.4k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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8 papers · 2 filters
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…