Open Access
27 August 2019 Air-core fiber distribution of hybrid vector vortex-polarization entangled states
Author Affiliations +
Abstract

Entanglement distribution between distant parties is one of the most important and challenging tasks in quantum communication. Distribution of photonic entangled states using optical fiber links is a fundamental building block toward quantum networks. Among the different degrees of freedom, orbital angular momentum (OAM) is one of the most promising due to its natural capability to encode high dimensional quantum states. We experimentally demonstrate fiber distribution of hybrid polarization-vector vortex entangled photon pairs. To this end, we exploit a recently developed air-core fiber that supports OAM modes. High fidelity distribution of the entangled states is demonstrated by performing quantum state tomography in the polarization-OAM Hilbert space after fiber propagation and by violations of Bell inequalities and multipartite entanglement tests. The results open new scenarios for quantum applications where correlated complex states can be transmitted by exploiting the vectorial nature of light.

CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
Daniele Cozzolino, Emanuele Polino, Mauro Valeri, Gonzalo Carvacho, Davide Bacco, Nicolò Spagnolo, Leif K. K. Oxenløwe, and Fabio Sciarrino "Air-core fiber distribution of hybrid vector vortex-polarization entangled states," Advanced Photonics 1(4), 046005 (27 August 2019). https://doi.org/10.1117/1.AP.1.4.046005
Received: 10 May 2019; Accepted: 5 August 2019; Published: 27 August 2019
Lens.org Logo
CITATIONS
Cited by 86 scholarly publications.
Advertisement
Advertisement
KEYWORDS
Polarization

Photon polarization

Entangled states

Quantum communications

Tomography

Photonics

Quantum information

Back to Top