Use of global interactions in efficient quantum circuit constructions

Abstract

In this paper we study the ways to use a global entangling operator to efficiently implement circuitry common to a selection of important quantum algorithms. In particular, we focus on the circuits composed with global Ising entangling gates and arbitrary addressable single-qubit gates. We show that under various circumstances the use of global operations can substantially improve the entangling gate count.

Keywords

• trapped ions
• quantum circuits
• quantum circuit optimization
• global entangling operators
• quantum computing
• SIMD architecture