English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Quantum annealing provides a way of solving optimization problems by encodingthem as Ising spin models which are implemented using physical qubits. Thesolution of the optimization problem then corresponds to the ground state ofthe system. Quantum tunnelling is harnessed to enable the system to move to theground state in a potentially highly non-convex energy landscape. A majordifficulty in encoding optimization problems in physical quantum annealingdevices is the fact that many real world optimization problems requireinteractions of higher connectivity as well as multi-body terms beyond thelimitations of the physical hardware. In this work we address the question ofhow to implement multi-body interactions using hardware which natively onlyprovides two-body interactions. The main result is an efficient circuit designof such multi-body terms using superconducting flux qubits in which effectiveN-body interactions are implemented using N ancilla qubits and only twoinductive couplers. It is then shown how this circuit can be used as the unitcell of a scalable architecture by applying it to a recently proposed embeddingtechnique for constructing an architecture of logical qubits with arbitraryconnectivity using physical qubits which have nearest-neighbor four-bodyinteractions. It is further shown that this design is robust to non-lineareffects in the coupling loops as well as mismatches in some of the circuitparameters.

Circuit design for multi-body interactions in superconducting quantum annealing system with applications to a scalable architecture