Work

2 µm Ghost Spectroscopy with an Integrated Silicon Quantum Photonics Source

Year: 2023

Type: article

Abstract: A ghost spectroscopy measurement with an entangled photon source is demonstrated. The transmission spectrum at the 2 m absorption peak of gaseous carbon dioxide (CO 2 ) is measured in a highly noisy environment. Despite the noise, a high sensitivity is obtained, a value that is larger than the one found for a classical spectroscopy measurement performed in the same conditions. The probe photons are time‐energy correlated photon pairs generated through intermodal spontaneous four‐wave mixing in a silicon waveguide. This observation opens the way to low‐cost on‐chip MIR sensors insensitive to environmental noise.

Source: Advanced Quantum Technologies

DOI: 10.1002/qute.202300159

Authors: Matteo Sanna, Davide Rizzotti, Stefano Signorini, Lorenzo Pavesi

Institutions: University of Trento, Institute of Photonic Sciences

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,020