Crystal superlattices for versatile and sensitive quantum spectroscopy
Toa ZS, Chekhova MV, Krivitsky LA, Paterova AV (2023)
Publication Type: Journal article
Publication year: 2023
Journal
Book Volume: 31
Pages Range: 7265-7276
Journal Issue: 5
DOI: 10.1364/OE.477019
Abstract
Nonlinear interferometers with quantum correlated photons have been demonstrated to improve optical characterization and metrology. These interferometers can be used in gas spectroscopy, which is of particular interest for monitoring greenhouse gas emissions, breath analysis and industrial applications. Here, we show that gas spectroscopy can be further enhanced via the deployment of crystal superlattices. This is a cascaded arrangement of nonlinear crystals forming interferometers, allowing the sensitivity to scale with the number of nonlinear elements. In particular, the enhanced sensitivity is observed via the maximum intensity of interference fringes that scales with low concentration of infrared absorbers, while for high concentration the sensitivity is better in interferometric visibility measurements. Thus, a superlattice acts as a versatile gas sensor since it can operate by measuring different observables, which are relevant to practical applications. We believe that our approach offers a compelling path towards further enhancements for quantum metrology and imaging using nonlinear interferometers with correlated photons.
Authors with CRIS profile
Additional Organisation(s)
Involved external institutions
Institute of Materials Research and Engineering (IMRE)
Singapore (SG)
Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light
Germany (DE)
Singapore (SG)
Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light
Germany (DE)
How to cite
APA:
Toa, Z.S., Chekhova, M.V., Krivitsky, L.A., & Paterova, A.V. (2023). Crystal superlattices for versatile and sensitive quantum spectroscopy. Optics Express, 31(5), 7265-7276. https://dx.doi.org/10.1364/OE.477019
MLA:
Toa, Zi S.D., et al. "Crystal superlattices for versatile and sensitive quantum spectroscopy." Optics Express 31.5 (2023): 7265-7276.
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