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High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
Published on: June 28, 2016
Photon-number-resolving detection at 1.04 μm via coincidence frequency upconversion
Kun Huang1, Xiaorong Gu, Min Ren
1State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China.
Optics Letters
|May 5, 2011
Summary
We developed a new method for photon-number-resolving detection using frequency upconversion. This technique accurately counts photons in visible light, paving the way for advanced quantum technologies.
Area of Science:
- Quantum optics
- Photonics
- Quantum information science
Background:
- Accurate photon counting is crucial for quantum information processing.
- Existing methods face challenges with efficiency and noise.
Purpose of the Study:
- To demonstrate a novel photon-number-resolving detector.
- To improve detection efficiency and reduce noise in photon counting.
Main Methods:
- Utilized coincidence frequency upconversion of a 1.04 μm coherent state.
- Employed synchronized pulses and a silicon multipixel photon counter.
- Reduced background noise using a synchronous pump as a coincidence gate.
Main Results:
- Successfully upconverted photons to visible replicas while preserving photon number distribution.
- Achieved a total detection efficiency of 3.7%.
- Obtained a low noise probability per pulse of 0.0002.
Conclusions:
- The developed frequency upconversion method enables effective photon-number-resolving detection.
- This technique offers improved performance for quantum applications requiring precise photon counting.
