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Published on: June 8, 2018
Improving the performance of bright quantum dot single photon sources using temporal filtering via amplitude
Serkan Ates1, Imad Agha, Angelo Gulinatti
1Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA. serkan.ates@nist.gov
Scientific Reports
|March 8, 2013
Summary
Amplitude modulation enhances single quantum dot performance for photonic quantum technologies. This technique improves single photon purity and indistinguishability, offering a flexible solution for solid-state quantum emitters.
Area of Science:
- Quantum optics
- Solid-state physics
- Photonics
Background:
- Semiconductor quantum dots are promising single photon sources for quantum technologies.
- Real-world devices often show performance limitations like multi-photon emission and dephasing.
Purpose of the Study:
- To demonstrate amplitude modulation as a method to improve quantum dot single photon source performance.
- To enhance single photon purity, temporal overlap, and indistinguishability.
Main Methods:
- Utilized a bright single quantum dot in a fiber-coupled microdisk cavity.
- Employed synchronized amplitude modulation to temporally filter emitted photons.
Main Results:
- Observed significant improvements in single photon purity.
- Achieved better temporal overlap between successive emission events.
- Enhanced the indistinguishability of emitted photons.
Conclusions:
- Amplitude modulation is a flexible technique applicable to various triggered single photon sources.
- This method can improve quantum dot-based systems post-fabrication.
- Addresses common issues like dephasing and multi-photon background in solid-state emitters.
