Work

Enhancements to quantum communication performance utilizing a prototype photonic lantern and multiplexed single-photon detection

Year: 2024

Type: article

Abstract: The optical interfacing between a free-space channel and single-photon detectors (SPDs) can greatly impact the inherent performance of a free-space quantum key distribution receiver. Direct coupling to detectors creates engineering challenges, and a single-mode fiber requires adaptive optics. Using a multimode fiber (MMF) is common; however, larger core diameters limit the achievable bandwidth. We demonstrate a prototype multimode fiber-based photonic lantern that allows us to retain the benefits of the large multimode coupling while transitioning to multiple, less multimodal fibers, reducing bandwidth limitation.

Source: Optics Letters

DOI: 10.1364/ol.533488

Authors: Harikumar K. Chandrasekharan, Peter Barrow, David MacLachlan, Robert R. Thomson, Ross Donaldson

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: hybrid

Funders: Royal Academy of Engineering, Engineering and Physical Sciences Research Council, Innovate UK

Awards: G2419832236, The EPSRC Quantum Communications Hub, Towards a Quantum Internet, G87932940

OpenAlex ID: W4401808389

FWCI: 0.148

Cites: 12

Cited by: 1

Related to: 10