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20232026
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quant-ph2026

Testing and Diagnosing Parameter Miscalibration in Probabilistic Error Cancellation via Direct Fidelity Estimation

Francesc Sabater, Tristan Kraft, Carlos A. Riofrío +1

Probabilistic Error Cancellation (PEC) is a standard technique for mitigating noise in quantum computations, but its unbiasedness relies on accurate knowledge of the underlying noi…

quant-ph2026

Phases of matrix-product states with symmetries and measurements: Finite nilpotent groups

David Gunn, Georgios Styliaris, Barbara Kraus +1

We study phases of one-dimensional matrix-product states (MPS) when transformations are restricted to symmetric local circuits supplemented with symmetric measurements and feedforw…

quant-ph2025

Bounded-Error Quantum Simulation via Hamiltonian and Lindbladian Learning

Tristan Kraft, Manoj K. Joshi, William Lam +11

Analog Quantum Simulators offer a route to exploring strongly correlated many-body dynamics beyond classical computation, but their predictive power remains limited by the absence…

quant-ph2024

Hamiltonian and Liouvillian learning in weakly-dissipative quantum many-body systems

Tobias Olsacher, Tristan Kraft, Christian Kokail +2

We discuss Hamiltonian and Liouvillian learning for analog quantum simulation from non-equilibrium quench dynamics in the limit of weakly dissipative many-body systems. We present…

quant-ph2023

Phases of Matrix Product States with Symmetric Quantum Circuits and Symmetric Measurements with Feedforward

David Gunn, Georgios Styliaris, Tristan Kraft +1

Two matrix product states (MPS) are in the same phase in the presence of symmetries if they can be transformed into one another via symmetric short-depth circuits. We consider how…