Lecocq, F.
, Aumentado, J.
, Esposito, M.
, Ranadive, A.
, Planat, L.
, Leger, S.
, Fraudet, D.
, Jouanny, V.
, Buisson, O.
, Guichard, W.
, Naud, C.
and Roch, N.
(2022),
Observation of two-mode squeezing in a traveling wave parametric ampli er, Physical Review Letters, [online], https://doi.org/10.1103/PhysRevLett.128.153603, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=933382
(Accessed March 12, 2026)
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Observation of two-mode squeezing in a traveling wave parametric ampli er
Published
Author(s)
, , Martina Esposito, Arpit Ranadive, Luca Planat, Sebastian Leger, Dorian Fraudet, Vincent Jouanny, Olivier Buisson, Wiebke Guichard, Cecile Naud, Nicolas Roch
Abstract
Traveling wave parametric ampli ers (TWPAs) have recently emerged as essential tools for broadband near quantum-limited ampli cation. 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.Citation
Physical Review Letters
Issue
128
Pub Type
Journals
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Created April 15, 2022, Updated March 4, 2026