The classical cost of simulating free-fermion (matchgate) circuits depends on both the input state and the computational task. We develop classical algorithms for circuits with non-Gaussian inputs, addressing exact sampling and both additive-error and exact estimation of expectation values. For inputs consisting of $n$...
Jiwon Heo, Oliver Reardon-Smith, Michał Oszmaniec et al.· 0 citations
A recurring principle in many-body physics is that sufficiently distributed interactions or correlations lead to an effectively mean-field description. For fermionic Gaussian states, we establish a quantitative version of this principle directly at the level of Majorana covariance matrices. The main observation is that...
Amir-Reza Negari, Farzin Salek, Z. Zimborás et al.· 1 citation
Quantum thermodynamics is traditionally formulated as a theory of equilibrium states and state transformations. Recent advances in higher-order quantum transformations, which describe physical scenarios beyond states and channels and provide a systematic framework for causal order, raise the question of how equilibrium...
S. Milz, Kyrylo Simonov, Z. Zimborás et al.· 0 citations
This work numerically benchmark the Jordan-Wigner, Bravyi-Kitaev, and Bonsai transformations, and confirms the viability of the Bonsai encoding for hardware-aware large-scale two-dimensional simulations.
A. Esposito, Andrea Giachero, Z. Zimborás et al.· 1 citation
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