High-precision cavity spectroscopy using high-frequency squeezed light

verfasst von

Jonas Junker, Dennis Wilken, Elanor Huntington, Michèle Heurs

Abstract

In this article, we present a novel spectroscopy technique that improves the signal-to-shot-noise ratio without the need to increase the laser power. Detrimental effects by technical noise sources are avoided by frequency-modulation techniques (frequency up-shifting). Superimposing the signal on non-classical states of light leads to a reduced quantum noise floor. Our method reveals in a proof-of-concept experiment small signals at Hz to kHz frequencies even below the shot noise limit. Our theoretical calculations fully support our experimental findings. The proposed technique is interesting for applications such as high-precision cavity spectroscopy, e.g., for explosive trace gas detection where the specific gas might set an upper limit for the laser power employed.

Organisationseinheit(en)

Institut für Gravitationsphysik
QuantumFrontiers

Externe Organisation(en)

Australian National University
Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut)

Typ

Artikel

Journal

Optics express

Band

29

Seiten

6053-6068

Anzahl der Seiten

16

ISSN

1094-4087

Publikationsdatum

10.02.2021

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Atom- und Molekularphysik sowie Optik

Elektronische Version(en)

https://doi.org/10.1364/OE.416713 (Zugang: Offen)
https://doi.org/10.15488/11389 (Zugang: Offen)