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Updated: Jun 26, 2026
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All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
Published on: January 19, 2018
Simple integrated single-atom detector
Marco Wilzbach1, Dennis Heine, Sönke Groth
1Atominstitut der Osterreichischen Universitäten, TU-Wien, Vienna, Austria.
Optics Letters
|February 3, 2009
Summary
This study introduces a robust integrated fluorescence detector for single-atom detection. The device achieves high efficiency and signal-to-noise ratios for detecting rubidium atoms.
Area of Science:
- Atomic Physics
- Quantum Optics
- Nanotechnology
Background:
- Precise detection of single atoms is crucial for quantum technologies.
- Existing methods often face limitations in efficiency and integration.
Purpose of the Study:
- To develop a reliable and robust integrated fluorescence detector for single-atom detection.
- To achieve high detection efficiency and signal-to-noise ratios.
Main Methods:
- Utilizing a tapered lensed single-mode fiber for excitation light delivery.
- Employing a multimode fiber for fluorescence collection.
- Integrating optical components within lithographically defined SU-8 structures on an atom chip.
Main Results:
- Demonstrated detection of single 87Rb atoms propagating in a magnetic guide.
- Achieved a maximum detection efficiency of up to 66%.
- Obtained a signal-to-noise ratio exceeding 100 for short integration times.
Conclusions:
- The developed integrated fluorescence detector is reliable and robust.
- The system shows significant potential for applications in quantum sensing and atom manipulation.
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