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

Dennis Wilken; Jonas Junker; Michèle Heurs

doi:10.1103/PhysRevApplied.21.L031002

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

Dennis Wilken, Jonas Junker, Michèle Heurs

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Article number	L031002
Journal	Physical Review Applied
Volume	21
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevApplied.21.L031002
Publication status	Published - Mar 2024

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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.",

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

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