Intensity Correlations in Quantum Cascade Laser Harmonic Frequency Combs

Year: 2022

Authors: Gabbrielli T., Bruno N., Corrias N., Borri S., Consolino L., Bertrand M., Shahmohammadi M., Franckie M., Beck M., Faist J., Zavatta A., Cappelli F., De Natale P.

Autors Affiliation: European Lab Nonlinear Spect, Via Nello Carrara 1, I-50019 Florence, Italy; Ist Nazl Ott CNR INO, Largo Enrico Fermi 6, I-50125 Florence, Italy; Ist Nazl Fis Nucl, Sez Firenze, I-50019 Florence, Italy; Swiss Fed Inst Technol, Inst Quantum Elect, Auguste Piccard Hof 1, CH-8093 Zurich, Switzerland.

Abstract: A novel study on harmonic frequency combs emitted by quantum cascade lasers (QCLs) is presented here, demonstrating the presence of intensity correlations between twin modes characterizing the emission spectra. These originate from a four-wave mixing process driven by the active medium’s third-order nonlinearity. The study of such correlations is essential for the engineering of a new generation of semiconductor devices with the potential of becoming integrated emitters of light with quantum properties, such as squeezing and entanglement. Starting from experimental results, the limits of state-of-the-art technology are discussed as well as the possible methodologies that could lead to the detection of nonclassical phenomena, or alternatively improve the design of QCLs, in the compelling perspective of generating quantum correlations in mid-infrared light.

Journal/Review: ADVANCED PHOTONICS RESEARCH

Volume: 3 (10)      Pages from: 2200162-1  to: 2200162-8

More Information: F.C. and P.D.N. contributed equally to this work. The authors gratefully thank the collaborators within the consortium of the Qombs Project, in particular, the company ppqSense for having provided the ultralow noise laser current drivers (QubeCLs). The authors acknowledge financial support from the European Union’s Horizon 2020 Research and Innovation Programme (Qombs Project, FET Flagship on Quantum Technologies grant no. 820419; Laserlab-Europe Project grant no. 871124) and from the Italian ESFRI Roadmap (Extreme Light Infrastructure – ELI Project).
KeyWords: frequency comb; intensity correlation; mid-infrared light; quantum cascade laser
DOI: 10.1002/adpr.202200162

Citations: 5
data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-11-17
References taken from IsiWeb of Knowledge: (subscribers only)
Connecting to view paper tab on IsiWeb: Click here
Connecting to view citations from IsiWeb: Click here