Fully guided and phase locked Ti:PPLN waveguide squeezing for applications in quantum sensing

Renato Domeneguetti, Michael Stefszky, Harald Herrmann, Christine Silberhorn, Ulrik L. Andersen, Jonas S. Neergaard-Nielsen, Tobias Gehring

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

This work reports a fully guided setup for single-mode squeezing on integrated titanium-indiffused periodically poled nonlinear resonators. A continuous-wave laser beam is delivered and the squeezed field is collected by single-mode fibers; up to -3.17(9) dB of useful squeezing is available in fibers. To showcase the usefulness of such a fiber-coupled device, we applied the generated squeezed light in a fiber-based phase sensing experiment, showing a quantum enhancement in the signal-to-noise ratio of 0.35 dB. Moreover, our investigation of the effect of photorefraction on the cavity resonance condition suggests that it causes system instabilities at high powers.
Original languageEnglish
JournalOptics Letters
Volume48
Issue number11
Pages (from-to)2999-3002
ISSN0146-9592
DOIs
Publication statusPublished - 2023

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