Lowering Tomography Costs in Quantum Simulation with a Symmetry Projected Operator Basis
Quantum Physics
2021-05-11 v2 Chemical Physics
Abstract
Measurement in quantum simulations provides a means for extracting meaningful information from a complex quantum state, and for quantum computing reducing the complexity of measurement will be vital for near-term applications. For most quantum simulations, the targeted state will obey a number of symmetries inherent to the system Hamiltonian. We obtain a alternative symmetry projected basis of measurement that reduces the number of measurements needed. Our scheme can be implemented at no additional cost on a quantum computer, can be implemented under a variety of measurement or tomography schemes, and is fairly resilient under noise.
Cite
@article{arxiv.2008.06027,
title = {Lowering Tomography Costs in Quantum Simulation with a Symmetry Projected Operator Basis},
author = {Scott E. Smart and David A. Mazziotti},
journal= {arXiv preprint arXiv:2008.06027},
year = {2021}
}