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

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

Physics and Astronomy(all)

Electronic version(s)

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