Measurements of Quantum Hamiltonians with Locally-Biased Classical Shadows
Sign Up to like & getrecommendations! Published in 2022 at "Communications in Mathematical Physics"
DOI: 10.1007/s00220-022-04343-8
Abstract: Obtaining precise estimates of quantum observables is a crucial step of variational quantum algorithms. We consider the problem of estimating expectation values of quantum Hamiltonians, obtained on states prepared on a quantum computer. We propose… read more here.
Keywords: quantum hamiltonians; measurements quantum; biased classical; hamiltonians locally ... See more keywords
A Bayesian analysis of classical shadows
Sign Up to like & getrecommendations! Published in 2021 at "npj Quantum Information"
DOI: 10.1038/s41534-021-00447-6
Abstract: The method of classical shadows proposed by Huang, Kueng, and Preskill heralds remarkable opportunities for quantum estimation with limited measurements. Yet its relationship to established quantum tomographic approaches, particularly those based on likelihood models, remains… read more here.
Keywords: classical shadows; estimation; bayesian analysis; analysis classical ... See more keywords
Filtering Crosstalk from Bath Non-Markovianity via Spacetime Classical Shadows.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.130.160401
Abstract: From an open system perspective non-Markovian effects due to a nearby bath or neighboring qubits are dynamically equivalent. However, there is a conceptual distinction to account for: neighboring qubits may be controlled. We combine recent… read more here.
Keywords: neighboring qubits; filtering crosstalk; bath; classical shadows ... See more keywords