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• W2273605827 abstract "High-gain amplifiers of electromagnetic signals operating near the quantum limit are crucial for quantum information systems and ultrasensitive quantum measurements. However, the existing techniques have a limited gain-bandwidth product and only operate with weak input signals. Here, we demonstrate a two-port optomechanical scheme for amplification and routing of microwave signals, a system that simultaneously performs high-gain amplification and frequency conversion in the quantum regime. Our amplifier, implemented in a two-cavity microwave optomechanical device, shows 41 dB of gain and has a high dynamic range, handling input signals up to 1013 photons per second, 3 orders of magnitude more than corresponding Josephson parametric amplifiers. We show that although the active medium, the mechanical resonator, is at a high temperature far from the quantum limit, only 4.6 quanta of noise is added to the input signal. Our method can be readily applied to a wide variety of optomechanical systems, including hybrid optical-microwave systems, creating a universal hub for signals at the quantum level.Received 20 June 2016DOI:https://doi.org/10.1103/PhysRevX.6.041024Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.Published by the American Physical SocietyPhysics Subject Headings (PhySH)Research AreasOptomechanicsQuantum measurementsQuantum state transferPhysical SystemsMicromechanical & nanomechanical oscillatorsQuantum InformationCondensed Matter, Materials & Applied PhysicsAtomic, Molecular & OpticalNonlinear Dynamics" @default.
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• W2273605827 date "2016-10-28" @default.
• W2273605827 modified "2023-10-18" @default.
• W2273605827 title "Low-Noise Amplification and Frequency Conversion with a Multiport Microwave Optomechanical Device" @default.
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• W2273605827 doi "https://doi.org/10.1103/physrevx.6.041024" @default.
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