Two-Level System as a Quantum Sensor for Absolute Calibration of Power
| Autor: | Vladimir Antonov, Oleg V. Astafiev, T. Hönigl-Decrinis, R. Shaikhaidarov, S. E. de Graaf |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Photon business.industry Attenuation Quantum sensor General Physics and Astronomy 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Spectral line Quantum technology Optics Electric power transmission Transmission line 0103 physical sciences Quantum system 010306 general physics 0210 nano-technology business |
| Zdroj: | Physical Review Applied. 13 |
| ISSN: | 2331-7019 |
| DOI: | 10.1103/physrevapplied.13.024066 |
| Popis: | A two-level quantum system can absorb or emit not more than one photon at a time. Using this fundamental property, we demonstrate how a superconducting quantum system strongly coupled to a transmission line can be used as a sensor of the photon flux. We propose four methods of sensing the photon flux and analyze them for the absolute calibration of power by measuring spectra of scattered radiation from the two-level system. This type of sensor can be tuned to operate in a wide frequency range, and does not disturb the propagating waves when not in use. Use of a two-level system as a power sensor enables a range of applications in quantum technologies, here in particular applied to calibrate the attenuation of transmission lines inside dilution refrigerators. |
| Databáze: | OpenAIRE |
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