| Autor: |
Vyvlecka, Michal, Jehle, Lennart, Nawrath, Cornelius, Giorgino, Francesco, Bozzio, Mathieu, Sittig, Robert, Jetter, Michael, Portalupi, Simone L., Michler, Peter, Walther, Philip |
| Předmět: |
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| Zdroj: |
Applied Physics Letters; 10/23/2023, Vol. 123 Issue 17, p1-7, 7p |
| Abstrakt: |
Building a quantum internet requires efficient and reliable quantum hardware, from photonic sources to quantum repeaters and detectors, ideally operating at telecommunication wavelengths. Thanks to their high brightness and single-photon purity, quantum dot (QD) sources hold the promise to achieve high communication rates for quantum-secured network applications. Furthermore, it was recently shown that excitation schemes such as longitudinal acoustic phonon-assisted (LA) pumping provide security benefits by scrambling the coherence between the emitted photon-number states. In this work, we investigate further advantages of LA-pumped quantum dots with emission in the telecom C-band as a core hardware component of the quantum internet. We experimentally demonstrate how varying the pump power and spectral detuning with respect to the excitonic transition can improve quantum-secured communication rates and provide stable emission statistics regardless of network-environment fluctuations. These findings have significant implications for general implementations of QD single-photon sources in practical quantum communication networks. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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