Broadband detection of 18 teeth in an 11-dB squeezing comb

authored by

Dennis Wilken, Jonas Junker, Michèle Heurs

Abstract

Squeezed vacuum is a versatile resource of bipartite entanglement for quantum metrology and information. Optical parametric oscillators generate these states in a frequency comb structure. We show the simultaneous detection of 18 teeth with 11 dB of squeezing each. We built a 1.5-m-long optical resonator to increase the spectral teeth density and significantly increase the detection bandwidth by employing unbalanced homodyne detection instead of balanced. Our approach can be a crucial step in using the scaling potential of high-frequency squeezed states in quantum information.

Organisation(s)

Institute of Gravitation Physics
QuantumFrontiers
PhoenixD: Photonics, Optics, and Engineering - Innovation Across Disciplines

External Organisation(s)

Australian National University
Max Planck Institute for Gravitational Physics (Albert Einstein Institute)

Type

Article

Journal

Physical review applied

Volume

21

No. of pages

6

ISSN

2331-7019

Publication date

04.03.2024

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

General Physics and Astronomy

Electronic version(s)

https://doi.org/10.1103/PhysRevApplied.21.L031002 (Access: Open)