Globally driven superconducting quantum computing architecture

TL;DR

This paper introduces a novel superconducting quantum computing architecture that uses a 2D ladder with three qubit species and leverages always-on longitudinal ZZ coupling for universal quantum computation.

Contribution

It presents a new globally driven quantum computing platform utilizing always-on ZZ coupling and specific driving frequencies, differing from existing approaches.

Findings

Achieves a blockade regime for quantum operations

Utilizes three species of superconducting qubits in a 2D ladder

Demonstrates potential for universal quantum computation

Abstract

We propose a platform for implementing a universal, globally driven quantum computer based on a 2D ladder hosting three different species of superconducting qubits. In stark contrast with the existing literature, our scheme exploits the always-on longitudinal ZZ coupling. The latter, combined with specific driving frequencies, enables the reach of a blockade regime, which plays a pivotal role in the computing scheme.