Beyond the standard quantum limit for parametric amplification of broadband signals

Abstract The low-noise amplification of weak microwave signals is crucial for countless protocols in quantum information processing. Quantum mechanics sets an ultimate lower limit of half a photon to the added input noise for phase-preserving amplification of narrowband signals, also known as the st...

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Bibliographic Details
Main Authors: M. Renger, S. Pogorzalek, Q. Chen, Y. Nojiri, K. Inomata, Y. Nakamura, M. Partanen, A. Marx, R. Gross, F. Deppe, K. G. Fedorov
Format: article
Language:EN
Published: Nature Portfolio 2021
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Online Access:https://doaj.org/article/3bd1f2b588c34a088b8a3a8a3cc5738f
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