Chirality in Quantum Computation with Spin Cluster Qubits

TL;DR

This paper investigates how three-body chiral interactions in quantum dot loops influence quantum computation, revealing significant coupling effects that affect qubit encoding strategies.

Contribution

It introduces the impact of chiral three-body terms on quantum dot-based qubit encodings, a novel aspect in quantum computation research.

Findings

Chiral three-body interactions are significant in triangular quantum dot configurations.

Chiral corrections strongly couple to external flux sources.

Implications for single qubit encoding strategies in quantum dots.

Abstract

We study corrections to the Heisenberg interaction between several lateral, single-electron quantum dots. We show, using exact diagonalization, that three-body chiral terms couple triangular configurations to external sources of flux rather strongly. The chiral corrections impact single qubit encodings utilizing loops of three or more Heisenberg coupled quantum dots.