| Autor: |
Echternach, P. M., Stone, K. J., Bradford, C. M., Day, P. K., Wilson, D. W., Megerian, K. G., Llombart, N., Bueno, J. |
| Předmět: |
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| Zdroj: |
Applied Physics Letters; 7/29/2013, Vol. 103 Issue 5, p053510, 5p, 1 Diagram, 3 Graphs |
| Abstrakt: |
We observed a sweep rate dependence of the quantum capacitance in a single Cooper-Pair box used as the readout of a Quantum Capacitance Detector. A model was developed that fits the data over five orders of magnitude in sweep rate and optical signal power and provides a natural calibration of the absorbed power. We are thereby able to measure the noise equivalent power of the detector as a function of absorbed power. We find that it is shot-noise-limited in detecting 1.5 THz photons with absorbed power ranging from 1 × 10-22 W to 1 × 10-17 W. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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