Simulation of single photon dynamics in coupled cavities through IBM quantum computer

TL;DR

This paper demonstrates simulating single photon dynamics in coupled cavities using IBM quantum computers, enabling state transfer, entanglement analysis, and Bell's inequality violation.

Contribution

It introduces a quantum circuit design that models coupled cavity dynamics and achieves perfect state transfer and entanglement measurement on IBM quantum hardware.

Findings

Successful simulation of photon dynamics on IBM quantum hardware

Achieved perfect state transfer between qubits

Observed violation of Bell's inequality

Abstract

We design a quantum circuit in IBM quantum computer that mimics the dynamics of single photon in a coupled cavity system. By suitably choosing the gate parameters in the quantum circuit, we could transfer an unknown qubit state between the qubits. The condition for perfect state transfer is obtained by solving the unitary time dynamics governed by the Hamiltonian of the coupled cavity system. We then demonstrate the dynamics of entanglement between the two-qubits and show violation of Bell's inequality in IBM quantum computer.