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Article Dans Une Revue Physical Review Letters Année : 2022

Observation of Two-Mode Squeezing in a Traveling Wave Parametric Amplifier

Résumé

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.
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Dates et versions

hal-03441448 , version 1 (25-08-2023)

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Martina Esposito, Arpit Ranadive, Luca Planat, Sébastien Leger, Dorian Fraudet, et al.. Observation of Two-Mode Squeezing in a Traveling Wave Parametric Amplifier. Physical Review Letters, 2022, 128 (15), pp.153603. ⟨10.1103/PhysRevLett.128.153603⟩. ⟨hal-03441448⟩

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