Quantum networks generation based on four-wave mixing

TL;DR

This paper proposes a scheme to generate versatile quantum networks using cascaded four-wave mixing processes in rubidium vapors, enabling the creation of continuous variable cluster states for quantum information processing.

Contribution

It introduces a theoretical framework for multimode output analysis of cascaded FWM systems and demonstrates their potential as sources of quantum network states.

Findings

Theoretical analysis of multimode output in cascaded FWM systems

Derivation of independent squeezed modes from FWM processes

Potential to generate continuous variable cluster states

Abstract

We present a scheme to realize versatile quantum networks by cascading several four-wave mixing (FWM) processes in warm rubidium vapors. FWM is an efficient $\chi^{(3)}$ nonlinear process, already used as a resource for multimode quantum state generation and which has been proved to be a promising candidate for applications to quantum information processing. We analyze theoretically the multimode output of cascaded FWM systems, derive its independent squeezed modes and show how, with phase controlled homodyne detection and digital post-processing, they can be turned into a versatile source of continuous variable cluster states.