500MHz resonant photodetector for high-quantum-effciency, low-noise homodyne measurement
arXiv:1803.06462 · doi:10.1063/1.5029859
Abstract
We design and demonstrate a resonant-type differential photodetector for low-noise quantum homodyne measurement at 500MHz optical sideband with 17MHz of bandwidth. By using a microwave monolithic amplifier and a discrete voltage buffer circuit, a low-noise voltage amplifier is realized and applied to our detector. 12dB of signal-to-noise ratio of the shot noise to the electric noise is obtained with 5mW of continuous-wave local oscillator. We analyze the frequency response and the noise characteristics of a resonant photodetector, and the theoretical model agrees with the shot noise measurement.
arXiv comment8 pages, 11 figures
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- A low-noise resonant input transimpedance amplified photodetector
- Semi-device-independent randomness certification on discretized continuous-variable platforms