Classical simulation of quantum many-body dynamics is challenged by the rapid growth of operator complexity, particularly in higher dimensions where tensor-network methods become increasingly demanding. We develop state-adapted Pauli-weight propagation based on generalized $m$-body mean-field projections, which compres...
Federico Tomás B. Pérez, Gabriela Wójtowicz, Matthias Kost et al.· 0 citations
Resource-theoretic approaches to thermodynamics provide powerful, model-independent bounds on the efficiency of physical processes, because they do not rely on microscopic details of the environment. Whether such bounds can be approached by realistic dynamics generated by explicit system-environment interactions remain...
Lea Lautenbacher, Giovanni Spaventa, S. Huelga et al.· 0 citations
The fundamental task of quantum hypothesis testing, which consists in discriminating quantum objects, has been extensively studied for quantum states and channels. Here, we investigate the fundamental limits of discriminating an arbitrary pair of quantum Markovian dynamics generated by Lindbladians, focusing on the rol...
Robert Salzmann, Ludovico Lami, M. Plenio et al.· 0 citations
Electron transmission from an input electrode, through a molecular system, to an output electrode has been widely studied using the steady-state non-equilibrium Green's function (NEGF) method. Recently, the wave packet method, which provides access to the transient dynamics of electrons as well as internal molecular de...
Thibaut Lacroix, Namgee Cho, Clemens Vittmann et al.· 0 citations
The Heisenberg picture can make quantum many-body simulation efficient when evolved observables admit compact operator representation within low-dimensional structures. Conventional Pauli-string propagation and truncation techniques exploit this structure, but in coherent Hamiltonian dynamics their error control is oft...
Federico Tomás B. Pérez, Gabriela Wójtowicz, M. Plenio· 3 citations
The description of open quantum system dynamics beyond the perturbative treatment (usually associated with Markovian master equations) is a computationally challenging task due to the unfavorable exponential scaling of memory kernels. Developed over recent decades in the context of quantum information and condensed mat...
Thibaut Lacroix, Adam Burgess, Nicola Lorenzoni et al.· 8 citations
Plaquette is presented, a theoretical framework and software suite that computes the logical performance of fault-tolerant architectures directly from the physics of such imperfections and provides a direct path from the open-system physics of a device to the logical performance of the FTQC built on it.
Raul Conchello Vendrell, Carlos D'iaz L'opez, Ish Dhand et al.· 0 citations
Quantum metrology faces major challenges in noisy environments, where decoherence rapidly degrades useful quantum resources. We investigate the dynamics of the precision limits given by the quantum Fisher information (QFI) for phase estimation under spatially correlated dephasing. We characterize the dynamics of the QF...
T. B. Lantaño, Gabriela Wójtowicz, S. Huelga et al.· 0 citations
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