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Updated: May 17, 2026
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Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Visible-to-telecom quantum frequency conversion of light from a single quantum emitter
Sebastian Zaske1, Andreas Lenhard, Christian A Keßler
1Fachrichtung 7.2 (Experimentalphysik), Universität des Saarlandes, Campus E2.6, 66123 Saarbrücken, Germany.
Physical Review Letters
|October 23, 2012
Summary
We achieved efficient quantum frequency conversion of single photons from visible to telecom wavelengths. This process conserves crucial quantum properties like coherence and photon antibunching, vital for quantum technology.
Area of Science:
- Quantum optics
- Quantum information science
- Materials science
Background:
- Quantum dots are promising sources for single photons.
- Telecom wavelengths are crucial for long-distance quantum communication.
- Quantum frequency conversion is needed to bridge these wavelengths.
Purpose of the Study:
- To demonstrate efficient quantum frequency conversion of single photons from visible to telecom wavelengths.
- To verify the conservation of quantum properties during conversion.
- To highlight the potential of this technique for quantum technology.
Main Methods:
- Utilizing quantum dots to emit single photons at 711 nm.
- Employing a quantum frequency conversion process to shift photons to 1313 nm.
- Analyzing first- and second-order coherence to confirm property conservation.
Main Results:
- Achieved over 30% efficiency in quantum frequency conversion.
- Demonstrated full conservation of coherence time and photon antibunching.
- Successfully translated visible single photons to telecom wavelengths.
Conclusions:
- Quantum frequency conversion is a viable technique for single photon sources.
- The method preserves essential quantum characteristics.
- This advancement supports the development of on-demand single photon sources for quantum applications.
