Low-Noise Amplification and Frequency Conversion with a Multiport Microwave Optomechanical Device

Research output: Contribution to journalArticleScientificpeer-review


  • Caspar Ockeloen-Korppi
  • Erno Damskägg
  • Juha-Matti Pirkkalainen
  • T. T. Heikkilä
  • Francesco Massel
  • Mika Sillanpää

Research units

  • University of Jyväskylä


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.


Original languageEnglish
Article number041024
Number of pages7
JournalPhysical Review X
Publication statusPublished - 28 Oct 2016
MoE publication typeA1 Journal article-refereed

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