7–11 Jul 2025
University of the Witwatersrand, Johannesburg
Africa/Johannesburg timezone

Noisy quantum channels fail to rip the fabric of entanglement

8 Jul 2025, 10:50
20m
Solomon Mahlangu House (University of the Witwatersrand, Johannesburg)

Solomon Mahlangu House

University of the Witwatersrand, Johannesburg

Oral Presentation Track C - Photonics Photonics

Speaker

PEDRO DINIS ORNELAS (University of the Witwatersrand)

Description

Non-local entangled states are an important resource for future quantum technologies, but their practical use is hindered by the effects of noisy quantum channels. However, recently discovered quantum Skyrmions, topologically structured entangled states, offer a promising solution. In this work, we develop a theoretical framework to study the evolution of entangled states and their topology in general quantum channels. Using photons entangled in orbital angular momentum and polarization as an example, we demonstrate that noise can be interpreted as a smooth geometric transformation of the mapping between the two-photon state spaces. From this, we predict complete resilience of the topology of the states against both depolarizing and non-depolarizing noise. Additionally, we identify specific sources of local noise that may destabilize the topology and discuss mitigation strategies. Our results have direct implications for quantum information distribution in noisy environments, including quantum computing and quantum networks.

Apply for student award at which level: PhD
Consent on use of personal information: Abstract Submission Yes, I ACCEPT

Primary authors

PEDRO DINIS ORNELAS (University of the Witwatersrand) Robert de Mello Koch (Huzhou University) Dr Bo-Qiang Lu (School of Science, Huzhou University, Huzhou 313000, China) Isaac Nape (University of the Witwatersrand) Andrew Forbes (University of the Witwatersrand)

Presentation materials

There are no materials yet.