Work

Programmable time-frequency mode-sorting of single photons with a multi-output quantum pulse gate

Year: 2024

Type: article

Abstract: We demonstrate a high-dimensional mode-sorter for single photons based on a multi-output quantum pulse gate, which we can program to switch between different temporal-mode encodings including pulse modes, frequency bins, time bins, and their superpositions. This device can facilitate practical realizations of quantum information applications such as high-dimensional quantum key distribution and thus enables secure communication with enhanced information capacity. We characterize the mode-sorter through a detector tomography in 3 and 5 dimensions and find a fidelity up to 0.958 ± 0.030 at the single-photon level.

Source: Optics Express

DOI: 10.1364/oe.544206

Authors: L. Serino, C. Eigner, B. Brecht, C. Silberhorn

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funders: QuantERA, Horizon 2020 Framework Programme

Award: G495187929