© 2026 Aqora Quantum S.A.S.

Terms Privacy Legal Notice

International Conference on Transparent Optical Networks

Chip-Based Compact Squeezing Experiment at a Telecom Wavelength

François Mondain, Tommaso Lunghi, Alessandro Zavatta, Élie Gouzien, Florent Doutre, Marc de Micheli, Sébastien Tanzilli, Virginia D’Auria

Published Jul 1, 2019• 0 citations

Abstract

In the context of quantum communication and technologies squeezed states of light represent a crucial resource. Nevertheless, their generation and detection usually demand complex bulk systems, hardly compatible with out-of-the-laboratory realizations. In view of future practical applications, we present a compact and easy-to-use set-up exploiting the association of commercial plug-and-play fibre components and integrated optics on lithium niobate for the generation and detection of squeezed light at a telecom wavelength. Squeezed light exhibits a reduced quantum noise of -2.00 ± 0.05 dB below the shot-noise level in a single-pass configuration.

DOI: 10.1109/icton.2019.8840375

Related papers

Chip-based squeezing at a telecom wavelength

François Mondain, Tommaso Lunghi, Alessandro Zavatta +5 more

We demonstrate a squeezing experiment exploiting the association of integrated optics and telecom technology as key features for compact, stable, and practical continuous variable quantum optics. In our setup, squeezed light is generated by single pass spontaneous parametric down conversion on a lithium niobate photonic circuit and detected by an homodyne detector whose interferometric part is directly integrated on the same platform. The remaining parts of the experiment are implemented using commercial plug-and-play devices based on guided-wave technologies. We measure, for a CW pump power of 40\,mW, a squeezing level of $-2.00\pm0.05$\,dB, (antisqueezing $+2.80\pm0.05$\,dB) thus confirming the validity of our approach and opening the way toward miniaturized and easy-to-handle continuous variable based quantum systems.

arXiv:1811.02097•Photonics Research•Jun 7, 2019•88 citations

Plug-and-Play Generation and Manipulation of Squeezing on Chip

François Mondain, Tommaso Lunghi, Alessandro Zavatta +5 more

Summary form only given. Squeezed light is a quantum feature which exhibits noise properties below the shot noise level (SNL), i.e. the ultimate limit for classical intensity measurements. This characteristic makes squeezing a good candidate for a large variety of applications encompassing metrology, quantum processing and communication [1]. Up to date, squeezed light is mostly generated by means of bulk optical parametric oscillators, which require complex stabilisation techniques [2], and detected with bulk homodyne like interferometers in free space, thus implying delicate alignement and spatial mode-matching procedures. These constraints demand new strategies for developing compact and easy-to-align squeezing experiments [3]. Our work addresses these issues by demonstrating a compact, versatile, telecom-compliant and easy-to-handle squeezing experiment by merging integrated optics and off-the-shelf fibred optical components. The squeezing generation and the homodyne interferometric part are fully integrated on a single chip (see Fig.1(a)), with no significant loss between these two stages and no spatial mode matching concerns. Moreover, with the only exception of homodyne photodiodes, all the other building blocks of our experiment are realized by means of guided-wave components.

Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)•Jun 1, 2019•0 citations

Chip-based squeezing at a telecom wavelength

François Mondain, Tommaso Lunghi, Alessandro Zavatta +5 more

We demonstrate a plug-and-play squeezing experiment entirely based on lithium-niobate integrated optics and commercial fiber components. We achieve −2 dB of squeezing confirming the validity of this original approach that opens to out-of-the-lab continuous-variable experiments.

Quantum Information and Measurement (QIM)•Jan 1, 2019•6 citations

Plug-and-Play squeezing experiment on chip at telecom wavelength

François Mondain, Tommaso Lunghi, Alessandro Zavatta +5 more

We demonstrate a plug-and-play squeezing experiment entirely based on off-the-shelves guided-wave components and lithium-niobate integrated optics. We achieve −2 dB of squeezing thus validating our original approach as a ressource for real-world continuous-variable implementations. © 2019 The Author(s)

Conference on Lasers and Electro-Optics•May 1, 2019•0 citations

Plug-and-Play squeezing experiment on chip at telecom wavelength

François Mondain, Tommaso Lunghi, Alessandro Zavatta +5 more

We demonstrate a plug-and-play squeezing experiment entirely based on off-the-shelves guided-wave components and lithium-niobate integrated optics. We achieve −2 dB of squeezing thus validating our original approach as a ressource for real-world continuous-variable implementations.

Conference on Lasers and Electro-Optics•Jan 1, 2019•0 citations

A fully guided-wave squeezing experiment for fiber quantum networks

Florian Kaiser, Bruno Fedrici, Alessandro Zavatta +2 more

We demonstrate, for the first time, the realization of an entirely guided-wave squeezing experiment at a telecom wavelength. The state generation relies on waveguide non-linear optics technology while squeezing collection and transmission are implemented by using only telecom fibre components. We observe up to $-1.83\pm0.05$ dB of squeezing emitted at 1542 nm in CW pumping regime. The compactness and stability of the experiment, compared to free-space configurations, represent a significant step towards achieving out-of-the-lab CV quantum communication, fully compatible with existing telecom fibre networks. We believe that this work stands as a promising approach for real applications as well as for "do-it-yourself" experiments

arXiv:1601.07203•Optica•Mar 25, 2016•102 citations

In the context of quantum communication and technologies squeezed states of light represent a crucial resource. Nevertheless, their generation and detection usually demand complex bulk systems, hardly compatible with out-of-the-laboratory realizations. In view of future practical applications, we present a compact and easy-to-use set-up exploiting the association of commercial plug-and-play fibre components and integrated optics on lithium niobate for the generation and detection of squeezed light at a telecom wavelength. Squeezed light exhibits a reduced quantum noise of -2.00 ± 0.05 dB below the shot-noise level in a single-pass configuration.

We demonstrate a squeezing experiment exploiting the association of integrated optics and telecom technology as key features for compact, stable, and practical continuous variable quantum optics. In our setup, squeezed light is generated by single pass spontaneous parametric down conversion on a lithium niobate photonic circuit and detected by an homodyne detector whose interferometric part is directly integrated on the same platform. The remaining parts of the experiment are implemented using commercial plug-and-play devices based on guided-wave technologies. We measure, for a CW pump power of 40\,mW, a squeezing level of

-2.00\pm0.05

\,dB, (antisqueezing

+2.80\pm0.05

\,dB) thus confirming the validity of our approach and opening the way toward miniaturized and easy-to-handle continuous variable based quantum systems.

Summary form only given. Squeezed light is a quantum feature which exhibits noise properties below the shot noise level (SNL), i.e. the ultimate limit for classical intensity measurements. This characteristic makes squeezing a good candidate for a large variety of applications encompassing metrology, quantum processing and communication [1]. Up to date, squeezed light is mostly generated by means of bulk optical parametric oscillators, which require complex stabilisation techniques [2], and detected with bulk homodyne like interferometers in free space, thus implying delicate alignement and spatial mode-matching procedures. These constraints demand new strategies for developing compact and easy-to-align squeezing experiments [3]. Our work addresses these issues by demonstrating a compact, versatile, telecom-compliant and easy-to-handle squeezing experiment by merging integrated optics and off-the-shelf fibred optical components. The squeezing generation and the homodyne interferometric part are fully integrated on a single chip (see Fig.1(a)), with no significant loss between these two stages and no spatial mode matching concerns. Moreover, with the only exception of homodyne photodiodes, all the other building blocks of our experiment are realized by means of guided-wave components.

We demonstrate, for the first time, the realization of an entirely guided-wave squeezing experiment at a telecom wavelength. The state generation relies on waveguide non-linear optics technology while squeezing collection and transmission are implemented by using only telecom fibre components. We observe up to

-1.83\pm0.05

dB of squeezing emitted at 1542 nm in CW pumping regime. The compactness and stability of the experiment, compared to free-space configurations, represent a significant step towards achieving out-of-the-lab CV quantum communication, fully compatible with existing telecom fibre networks. We believe that this work stands as a promising approach for real applications as well as for "do-it-yourself" experiments