Stabilizers as a design tool for new forms of the Lechner-Hauke-Zoller annealer

11Citations
Citations of this article
35Readers
Mendeley users who have this article in their library.

Abstract

In a recent paper, Lechner, Hauke, and Zoller (LHZ) described a means to translate a Hamiltonian of N spin-1/2 particles with "all-To-All" interactions into a larger physical lattice with only on-site energies and local parity constraints. LHZ used this mapping to propose a novel form of quantum annealing. We provide a stabilizerbased formulation within which we can describe both this prior approach and a wide variety of variants. Examples include a triangular array supporting all-To-All connectivity as well as arrangements requiring only 2N or N log N spins but providing interesting bespoke connectivities. Further examples show that arbitrarily high-order logical terms can be efficiently realized, even in a strictly two-dimensional layout. Our stabilizers can correspond to either even-parity constraints, as in the LHZ proposal, or odd-parity constraints. Considering the latter option applied to the original LHZ layout, we note that it may simplify the physical realization because the required ancillas are only spin-1/2 systems (that is, qubits rather than qutrits); moreover, the interactions are very simple. We make a preliminary assessment of the impact of these design choices by simulating small (fewqubit) systems; we find some indications that the new variant may maintain a larger minimum energy gap during the annealing process.

Cite

CITATION STYLE

APA

Rocchetto, A., Benjamin, S. C., & Li, Y. (2016). Stabilizers as a design tool for new forms of the Lechner-Hauke-Zoller annealer. Science Advances, 2(10). https://doi.org/10.1126/sciadv.1601246

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free