Parallel quantum signal processing via polynomial factorization

JM Martyn, ZM Rossi, KZ Cheng, Y Liu… - arxiv preprint arxiv …, 2024 - arxiv.org
Quantum signal processing (QSP) is a methodology for constructing polynomial
transformations of a linear operator encoded in a unitary. Applied to an encoding of a state …

Learning the structure of any Hamiltonian from minimal assumptions

A Zhao - arxiv preprint arxiv:2410.21635, 2024 - arxiv.org
We study the problem of learning an unknown quantum many-body Hamiltonian $ H $ from
black-box queries to its time evolution $ e^{-\mathrm {i} H t} $. Prior proposals for solving this …

The Hitchhiker's Guide to QSP pre-processing

SE Skelton - arxiv preprint arxiv:2501.05977, 2025 - arxiv.org
Quantum signal processing (QSP) relies on a historically costly pre-processing step," QSP-
processing/phase-factor finding." QSP-processing is now a developed topic within quantum …

Randomly Compiled Quantum Simulation with Exponentially Reduced Circuit Depths

JD Watson - arxiv preprint arxiv:2411.04240, 2024 - arxiv.org
The quantum stochastic drift protocol, also known as qDRIFT, has become a popular
algorithm for implementing time-evolution of quantum systems using randomised compiling …