Projects per year
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.
Original language | English |
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Article number | 041024 |
Number of pages | 7 |
Journal | Physical Review X |
Volume | 6 |
DOIs | |
Publication status | Published - 28 Oct 2016 |
MoE publication type | A1 Journal article-refereed |
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Projects
- 4 Finished
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Centre of Excellence in Low Temperature Quantum Phenomena and Devices
01/01/2015 → 31/12/2017
Project: Academy of Finland: Other research funding
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CAVITYQPD: Cavity quantum phonon dynamics
Välimaa, A., Ockeloen-Korppi, C., Wang, C., Santos, J. T., Damskägg, E., Sillanpää, M., Rissanen, I., Tong, F., Zhou, J., Mahato, S., Mercier de Lepinay, L., Crump, W., Förbom, W. & Mishra, H.
20/11/2014 → 31/12/2020
Project: EU: ERC grants
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Electromechanical quantum coherent systems
Sillanpää, M., Ockeloen-Korppi, C., Lemettinen, J., Paraoanu, G. & Damskägg, E.
01/01/2010 → 31/12/2014
Project: EU: ERC grants
Equipment
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OtaNano – Low Temperature Laboratory
Alexander Savin (Manager)
Department of Applied PhysicsFacility/equipment: Facility
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OtaNano - Nanofab
Päivikki Repo (Manager)
School of Electrical EngineeringFacility/equipment: Facility