Projects per year
Abstract
Entangled microwave photons form a fundamental resource for quantum information processing and sensing with continuous variables. We use a low-loss Josephson metamaterial comprising superconducting, nonlinear, asymmetric inductive elements to generate frequency-entangled photons from vacuum fluctuations at a rate of 2 giga entangled bits per second spanning over the 4-GHz bandwidth. The device is operated as a traveling-wave parametric amplifier under Kerr-relieving biasing conditions. Furthermore, we demonstrate single-mode squeezing in such devices - 3.1±0.7dB below the zero-point level at half of modulation frequency.
Original language | English |
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Article number | 024063 |
Pages (from-to) | 1-14 |
Number of pages | 14 |
Journal | Physical Review Applied |
Volume | 18 |
Issue number | 2 |
DOIs | |
Publication status | Published - 23 Aug 2022 |
MoE publication type | A1 Journal article-refereed |
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QUARTET: Quantum readout techniques and technologies
Paraoanu, G., Khalifa, H., Petrovnin, K. & Rapinoja De Carvalho, A.
15/10/2019 → 30/04/2023
Project: EU: Framework programmes funding
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QMiCS: Quantum Microwave Communication and Sensing
Möttönen, M., Lahtinen, V. & Liu, W.
01/10/2018 → 31/03/2022
Project: EU: Framework programmes funding