Quantum Zeno dynamics induced atomic entanglement in a hybrid atom-cavity-fiber system

TL;DR

This paper presents a method using quantum Zeno dynamics in a hybrid atom-cavity-fiber system to efficiently generate various multi-atom entangled states, advancing quantum information processing techniques.

Contribution

It introduces a novel approach leveraging dark states and quantum Zeno dynamics to produce complex atomic entanglement in a hybrid system.

Findings

Achieved two-atom multiple-dimensional entanglement.

Realized two-atom Bell state.

Generated three-atom GHZ state.

Abstract

Quantum entanglement is important quanum resources in quantum information sicence. Here we propose an approach to {preparing} atomic quantum entanglement in a hybrid atom-cavity-fiber system. Using quantum Zeno dynamics method, the system evolution states are always split into a series of Zeno invariant {subspaces} consisting of dark and bright states. By choosing the initial state of the system, the bright states are all neglected and only dark states are kept to build the effective Hamiltonian. By tuning the system parameters, two-atom multiple-dimensional entanglement, two-atom Bell state, and three-atom GHZ state can be realized by one step. Our proposal provides a way to perform quantum information processing with dark states.