Quantum Light Enterprise

Informazioni relative al progetto

QLite

ID dell’accordo di sovvenzione: 812763

DOI

10.3030/812763

Progetto chiuso

Data della firma CE 13 Agosto 2018

Data di avvio 1 Gennaio 2019

Data di completamento 31 Dicembre 2019

Finanziato da

• EXCELLENT SCIENCE - European Research Council (ERC)

Costo totale

€ 262 350,00

Contributo UE

€ 149 850,00

Coordinato da

UNIVERSITY OF HAMBURG
Germany

Periodic Reporting for period 1 - QLite (Quantum Light Enterprise)

Periodo di rendicontazione: 2019-01-01 al 2019-12-31

Sintesi del contesto e degli obiettivi generali del progetto

All commercially available laser devices produce light that shows remaining noise in frequency as well as power. This is due to a rather fundamental issue – the quantisation of light into photons. Research laboratories in the field of quantum optics, however, have been able to generate laser light with reduced (‘squeezed’) photon noise by producing quantum correlations between the photons using wavelength conversion of the light. Since 2019 this new technology has been being used in all gravitational-wave observatories for achieving better resolution in the observation of black hole and neutron star mergers in deep space.
The ERC-2018-PoC project 'QLite' has researched and developed technology that is necessary to commercialize continuous-wave laser light with squeezed photon noise at 1550nm wavelength. ‘Squeezed light’ at 1550nm (and also at other wavelengths) has very high innovative potential within the envisioned 2nd quantum revolution. ‘Squeezed light’ increases the measurement sensitivity of optical contact-free vibration measurements in industry. It allows for the calibration of photometers without a lamp of calibrated spectral radiance. It improves the security level in quantum key distribution (QKD) for secure optical communication. Most likely, more applications will be discovered in future. Within ‘QLite’ a rather compact squeezed-light laser device with a footprint of 80cm x 80cm was fabricated and its stable operation characterized. It was proven that the QLite laser improves measurements of acoustic vibrations over most of the audio band. The device represents a first step towards a commercial product.