10-15 ottobre 2021
Europe/Rome timezone

Towards the detection of quantum light in the mid-infrared

12 ott 2021, 10:05
25m
Oral Session 3

Speaker

Dr. Natalia Bruno (Istituto Nazionale di Ottica (CNR-INO), Largo Enrico Fermi 6, 50125 Florence, Italy & European Laboratory for Non-linear Spectroscopy (LENS), Via nello Carrara 1, 50019 Sesto Fiorentino, Florence, Italy)

Description

Quantum Cascade Laser (QCL) frequency combs could emit nonclassical light and multimode entanglement thanks to a third order nonlinearity that allows for Four Wave Mixing in the device (Faist 2016), which makes them ideal candidates for free-space communication applications.
However, in the mid-infrared, the lack of efficient and low-noise detectors compromises enormously the ability to investigate non classical features of light. In addition, the laser gain of the device itself can introduce noise due to the amplification. Having a signature of non classical light, such as squeezing, is a challenging task in these conditions. We demonstrate the possibility of investigating continuous-variable quantum physics in the mid-infrared through a novel Balanced Homodyne Detector (Gabbrielli 2021), tested with QCLs.

Primary author

Dr. Natalia Bruno (Istituto Nazionale di Ottica (CNR-INO), Largo Enrico Fermi 6, 50125 Florence, Italy & European Laboratory for Non-linear Spectroscopy (LENS), Via nello Carrara 1, 50019 Sesto Fiorentino, Florence, Italy)

Co-authors

Dr. Francesco Cappelli (Istituto Nazionale di Ottica (CNR-INO), Largo Enrico Fermi 6, 50125 Florence, Italy & European Laboratory for Non-linear Spectroscopy (LENS), Via nello Carrara 1, 50019 Sesto Fiorentino, Florence, Italy ) Mr. Nicola Corrias (Istituto Nazionale di Ottica (CNR-INO), Largo Enrico Fermi 6, 50125 Florence, Italy & European Laboratory for Non-linear Spectroscopy (LENS), Via nello Carrara 1, 50019 Sesto Fiorentino, Florence, Italy ) Dr. Simone Borri (Istituto Nazionale di Ottica (CNR-INO), Largo Enrico Fermi 6, 50125 Florence, Italy ) Dr. Paolo De Natale (Istituto Nazionale di Ottica (CNR-INO), Largo Enrico Fermi 6, 50125 Florence, Italy & European Laboratory for Non-linear Spectroscopy (LENS), Via nello Carrara 1, 50019 Sesto Fiorentino, Florence, Italy ) Dr. Alessandro Zavatta (Istituto Nazionale di Ottica (CNR-INO)) Tecla Gabbrielli (Istituto Nazionale di Ottica (CNR-INO), Largo Enrico Fermi 6, 50125 Florence, Italy & European Laboratory for Non-linear Spectroscopy (LENS), Via nello Carrara 1, 50019 Sesto Fiorentino, Florence, Italy )

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