187 citations · 2k across the 94 of their papers we have counts for
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Classical chaotic signatures in Krylov space
Gastón F. Scialchi, Augusto J. Roncaglia, Diego A. Wisniacki
In recent years, Krylov space approaches have emerged as a useful framework for characterizing dynamical chaos in a wide variety of physical systems. However, the connection betwee…
Quantum analogues of exponential sensitivity: from Loschmidt echo to Krylov complexity
Ignacio García-Mata, Diego A. Wisniacki
One of the fundamental manifestations of classical chaos is exponential sensitivity to initial conditions that is, two trajectories starting from nearly identical initial states di…
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…
Fundamental Limits to Cat-Code Qubits from Chaos-Assisted Tunneling
Lionel E. Martínez, Ignacio García-Mata, Diego A. Wisniacki
We show that chaos-assisted tunneling (CAT) imposes an intrinsic limit to the protection of Kerr-cat qubits. In the static effective description, tunneling between the quasidegener…
Ruelle-Pollicott Decay of Out-of-Time-Order Correlators in Many-Body Systems
Jerónimo Duarte, Ignacio García-Mata, Diego A. Wisniacki
The out-of-time-order correlator (OTOC) quantifies information scrambling in quantum systems and serves as a key diagnostic of quantum chaos. In one-body systems with a classical c…
Resonance Assisted Tunneling in Floquet spin-J systems
J. A. Segura-Landa, Diego A. Wisniacki, Sergio Lerma-Hernández +1
We apply the theory of Resonance Assisted Tunneling (RAT) to a many-body quantum kicked system with a well-defined semiclassical limit. Using a quantum resonant condition, we ident…