Simulating kaon mixing with Josephson phase qubits

TL;DR

This paper proposes using superconducting Josephson phase qubits to simulate kaon mixing, providing a new approach to test the superposition principle in macroscopic quantum systems.

Contribution

It introduces a novel method to simulate particle physics phenomena using superconducting qubits, bridging quantum computing and fundamental physics.

Findings

Demonstrates feasibility of simulating kaon mixing with phase qubits

Highlights potential for testing superposition in macroscopic quantum states

Provides pedagogical framework for quantum simulation of particle physics

Abstract

Superconducting circuits with Josephson junctions distinguish themselves from other types of quantum computing architectures by having easily controllable metastable computational states (the so-called phase qubits) with a very large ratio of their respective lifetimes. In this pedagogical note I describe how we can use this remarkable property of the phase qubits to further test the validity of the superposition principle in the macroscopic quantum regime by simulating the kaon mixing mechanism of particle physics.