Cavity optomechanics mediated by a quantum two-level system
| Autor: | Tero T. Heikkilä, Jani Tuorila, Juha-Matti Pirkkalainen, Mika Sillanpää, Sung Un Cho, Francesco Massel, Pertti Hakonen |
|---|---|
| Přispěvatelé: | Department of Applied Physics, University of Jyväskylä, University of Oulu, Aalto-yliopisto, Aalto University |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Josephson effect
Photon Orders of magnitude (temperature) Josephson junction qubit ta221 General Physics and Astronomy Physics::Optics 02 engineering and technology Bioinformatics 01 natural sciences Article General Biochemistry Genetics and Molecular Biology Resonator Computer Science::Emerging Technologies Condensed Matter::Superconductivity Quantum mechanics 0103 physical sciences 010306 general physics Quantum Optomechanics ta218 Physics Multidisciplinary ta214 ta114 Quantum limit General Chemistry cavity optomechanics 021001 nanoscience & nanotechnology Qubit 0210 nano-technology |
| Zdroj: | Nature Communications |
| ISSN: | 2041-1723 |
| Popis: | 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. Radiation pressure can control the motion of a nanoscale resonator, but pushing this to the quantum limit is difficult because the influence of a single photon is tiny. Here, the authors boost the radiation–pressure interaction by six orders of magnitude using a Josephson junction qubit |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|