Bistability in a mesoscopic Josephson junction array resonator
| Autor: | Seyed Iman Mirzaei, Ioan Pop, Lukas Grünhaupt, Mathieu L. Juan, P. R. Muppalla, Gerhard Kirchmair, B. Prasanna Venkatesh, O. Gargiulo |
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| Předmět: |
Physics
Josephson effect Quantum Physics Mesoscopic physics Photon Bistability Condensed matter physics Condensed Matter - Superconductivity Anharmonicity FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Superconductivity (cond-mat.supr-con) Resonator Laser linewidth Quantum error correction 0103 physical sciences Quantum Physics (quant-ph) 010306 general physics 0210 nano-technology |
| Zdroj: | ResearcherID Physical Review B |
| DOI: | 10.1103/PhysRevB.97.024518 |
| Popis: | We present an experimental investigation of stochastic switching of a bistable Josephson junctions array resonator with a resonance frequency in the GHz range. As the device is in the regime where the anharmonicity is on the order of the linewidth, the bistability appears for a pump strength of only a few photons. We measure the dynamics of the bistability by continuously observing the jumps between the two metastable states, which occur with a rate ranging from a few Hz down to a few mHz. The switching rate strongly depends on the pump strength, readout strength and the temperature, following Kramer's law. The interplay between nonlinearity and coupling, in this little explored regime, could provide a new resource for nondemolition measurements, single photon switches or even elements for autonomous quantum error correction. main text: 6 pages, 4 figures; supplementary material: 9 pages, 9 figures |
| Databáze: | OpenAIRE |
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