Projects per year
Abstract
Coupling electromagnetic waves in a cavity and mechanical vibrations via the radiation pressure of photons is a promising platform for investigations of quantum–mechanical properties of motion. A drawback is that the effect of one photon tends to be tiny, and hence one of the pressing challenges is to substantially increase the interaction strength. A novel scenario is to introduce into the setup a quantum two-level system (qubit), which, besides strengthening the coupling, allows for rich physics via strongly enhanced nonlinearities. Here we present a design of cavity optomechanics in the microwave frequency regime involving a Josephson junction qubit. We demonstrate boosting of the radiation–pressure interaction by six orders of magnitude, allowing to approach the strong coupling regime. We observe nonlinear phenomena at single-photon energies, such as an enhanced damping attributed to the qubit. This work opens up nonlinear cavity optomechanics as a plausible tool for the study of quantum properties of motion.
Original language | English |
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Article number | 6981 |
Pages (from-to) | 1-6 |
Number of pages | 6 |
Journal | Nature Communications |
Volume | 6 |
DOIs | |
Publication status | Published - 2015 |
MoE publication type | A1 Journal article-refereed |
Fingerprint
Dive into the research topics of 'Cavity optomechanics mediated by a quantum two-level system'. Together they form a unique fingerprint.Projects
- 3 Finished
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CAVITYQPD: Cavity quantum phonon dynamics
Sillanpää, M. (Principal investigator)
20/11/2014 → 31/12/2020
Project: EU: ERC grants
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Mesoscopic heattronics: thermal and nonequilibrium effects and fluctuations in nanoelectronics
Heikkilä, T. (Principal investigator)
01/01/2010 → 31/12/2015
Project: EU: ERC grants
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Electromechanical quantum coherent systems
Sillanpää, M. (Principal investigator)
01/01/2010 → 31/12/2014
Project: EU: ERC grants
Equipment
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OtaNano – Low Temperature Laboratory
Savin, A. (Manager) & Rissanen, A. (Other)
OtaNanoFacility/equipment: Facility
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