# Scalable quantum computing model in the circuit-QED lattice with circulator function

## TL;DR

This paper introduces a scalable quantum computing model using circuit-QED in a Kagome lattice, leveraging a controllable circulator function to enable efficient two-qubit gates across the lattice.

## Contribution

It presents a novel approach to scalable quantum computing by integrating circulator functions in a circuit-QED Kagome lattice for flexible qubit interactions.

## Key findings

- Achieves selective pairwise qubit coupling via circulator control
- Enables two-qubit gate operations between any qubits in the lattice
- Demonstrates potential for scalable quantum computing architecture

## Abstract

We propose a model for a scalable quantum computing in the circuit-quantum electrodynamics(QED) architecture. In the Kagome lattice of qubits three qubits are connected to each other through a superconducting three-junction flux qubit at the vertices of the lattice. By controlling one of the three Josephson junction energies of the intervening flux qubit we can achieve the circulator function that couples arbitrary pair of two qubits among three. This selective coupling enables the interaction between two nearest neighbor qubits in the Kagome lattice, and further the two-qubit gate operation between any pair of qubits in the whole lattice by performing consecutive nearest neighbor two-qubit gates.