Low-Noise Amplification and Frequency Conversion with a Multiport Microwave Optomechanical Device
Ockeloen-Korppi, C.F., Damskägg, E., Pirkkalainen, J.-M., Heikkilä, T., Massel, F., & Sillanpää, M. A. (2016). Low-Noise Amplification and Frequency Conversion with a Multiport Microwave Optomechanical Device. Physical Review X, 6 (4), 041024. doi:10.1103/PhysRevX.6.041024
Published inPhysical Review X
© the Authors, 2016. This is an open access article published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License.
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. ...