Heralded generation of entanglement with coupled cavities

TL;DR

This paper presents a scheme for generating heralded entanglement between photons and atoms using coupled cavities, leveraging atomic measurements for efficiency and robustness against photon loss in quantum information tasks.

Contribution

It introduces a novel method utilizing coupled cavities and atomic measurements to efficiently generate heralded entanglement, enhancing robustness for quantum information applications.

Findings

Efficient heralded entanglement generation demonstrated

Robust against photon loss due to atomic measurement

Applicable to two-photon, two-atom, or atom-photon states

Abstract

We propose a scheme to generate two-photon, two-atom, or atom-photon entangledstates with a coupled system of two cavities. In our scheme, two cavity photonsare exchanged by the direct inter-cavity coupling, while atoms in the cavitiessimply play the role of generating and probing them. By virtue of the highefficiency of atomic state measurement, this method enables the realization ofefficient heralded entanglement generation robust against photon loss, whichgreatly facilitates applications in quantum information processing.