Time optimal quantum state transfer in a fully-connected quantum computer
Quantum Physics
2023-11-28 v2
Abstract
The speed limit of quantum state transfer (QST) in a system of interacting particles is not only important for quantum information processing, but also directly linked to Lieb-Robinson-type bounds that are crucial for understanding various aspects of quantum many-body physics. For strongly long-range interacting systems such as a fully-connected quantum computer, such a speed limit is still unknown. Here we develop a new Quantum Brachistochrone method that can incorporate inequality constraints on the Hamiltonian. This method allows us to prove an exactly tight bound on the speed of QST on a subclass of Hamiltonians experimentally realizable by a fully-connected quantum computer.
Keywords
Cite
@article{arxiv.2303.04804,
title = {Time optimal quantum state transfer in a fully-connected quantum computer},
author = {Casey Jameson and Bora Basyildiz and Daniel Moore and Kyle Clark and Zhexuan Gong},
journal= {arXiv preprint arXiv:2303.04804},
year = {2023}
}
Comments
13 pages, 2 figures, accepted version