102 citations · 224 across the 5 of their papers we have counts for
11 papers
Finite temperature tensor network study of the Hubbard model on an infinite square lattice
Aritra Sinha, Marek M. Rams, Piotr Czarnik +1
The Hubbard model is a longstanding problem in the theory of strongly correlated electrons and a very active one in the experiments with ultracold fermionic atoms. Motivated by cur…
Qubit-efficient exponential suppression of errors
Piotr Czarnik, Andrew Arrasmith, Lukasz Cincio +1
Achieving a practical advantage with near-term quantum computers hinges on having effective methods to suppress errors. Recent breakthroughs have introduced methods capable of expo…
Tensor network study of the magnetization plateau in the Shastry-Sutherland model at finite temperature
Piotr Czarnik, Marek M. Rams, Philippe Corboz +1
The two-dimensional infinite projected entangled pair states tensor network is evolved in imaginary time with the full update (FU) algorithm to simulate the Shastry-Sutherland mode…
Effect of barren plateaus on gradient-free optimization
Andrew Arrasmith, M. Cerezo, Piotr Czarnik +2
Barren plateau landscapes correspond to gradients that vanish exponentially in the number of qubits. Such landscapes have been demonstrated for variational quantum algorithms and q…
Unified approach to data-driven quantum error mitigation
Angus Lowe, Max Hunter Gordon, Piotr Czarnik +3
Achieving near-term quantum advantage will require effective methods for mitigating hardware noise. Data-driven approaches to error mitigation are promising, with popular examples…
Tensor network simulation of the Kitaev-Heisenberg model at finite temperature
Piotr Czarnik, Anna Francuz, Jacek Dziarmaga
We investigate the Kitaev-Heisenberg (KH) model at finite temperature using the exact environment full update (eeFU), introduced in Phys. Rev. B 99, 035115 (2019), which represents…