Physical Review Letters· 2016Q1
Detection of 15 dB Squeezed States of Light and their Application for the Absolute Calibration of Photoelectric Quantum Efficiency
- 896citations
- Q1SCImago
- 2016year
Short summary
Researchers report the direct measurement of 15 dB squeezed states of light, a nonclassical resource, and used them to achieve an absolute calibration of photoelectric quantum efficiency.
AI-generated from the title and abstract; the full text is not read.
Key points
- Successfully detected 15 dB squeezed vacuum states of light.
- Applied squeezed light to calibrate the quantum efficiency of an InGaAs p-i-n photodiode.
- Achieved an absolute quantum efficiency calibration of 99.5% with 0.5% uncertainty.
- Calibration performed without requiring standard light sources or knowledge of incident power.
AI-generated from the title and abstract; the full text is not read.
Abstract
Squeezed states of light belong to the most prominent nonclassical resources. They have compelling applications in metrology, which has been demonstrated by their routine exploitation for improving the sensitivity of a gravitational-wave detector since 2010. Here, we report on the direct measurement of 15 dB squeezed vacuum states of light and their application to calibrate the quantum efficiency of photoelectric detection. The object of calibration is a customized InGaAs positive intrinsic negative (p-i-n) photodiode optimized for high external quantum efficiency. The calibration yields a value of 99.5% with a 0.5% (k=2) uncertainty for a photon flux of the order 10^{17} s^{-1} at a wavelength of 1064 nm. The calibration neither requires any standard nor knowledge of the incident light power and thus represents a valuable application of squeezed states of light in quantum metrology.
The authors' abstract, as published at the source. Physical Review Letters, 2016 · DOI ↗
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Field: Instrumentation
InstrumentationPhysics and Astronomy