Observation of two-mode squeezing in a traveling wave parametric amplifier

Traveling wave parametric amplifiers (TWPAs) have recently emerged as essential tools for broadband near quantum-limited amplification. However, their use to generate microwave quantum states still misses an experimental demonstration. In this letter, we report operation of a TWPA as a source of two...

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Bibliographic Details
Published inarXiv.org
Main Authors Esposito, Martina, Ranadive, Arpit, Planat, Luca, Leger, Sebastian, Fraudet, Dorian, Jouanny, Vincent, Buisson, Olivier, Guichard, Wiebke, Naud, Cécile, Aumentado, José, Lecocq, Florent, Roch, Nicolas
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 19.04.2022
Subjects
Broadband
Compressing
Continuity (mathematics)
Microwave photonics
Parametric amplifiers
Physics - Quantum Physics
Quadratures
Quantum computing
Quantum entanglement
Traveling waves
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Summary:Traveling wave parametric amplifiers (TWPAs) have recently emerged as essential tools for broadband near quantum-limited amplification. However, their use to generate microwave quantum states still misses an experimental demonstration. In this letter, we report operation of a TWPA as a source of two-mode squeezed microwave radiation. We demonstrate broadband entanglement generation between two modes separated by up to 400 MHz by measuring logarithmic negativity between 0.27 and 0.51 and collective quadrature squeezing below the vacuum limit between 1.5 and 2.1 dB. This work opens interesting perspectives for the exploration of novel microwave photonics experiments with possible applications in quantum sensing and continuous variable quantum computing.
ISSN:2331-8422
DOI:10.48550/arxiv.2111.03696