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Abstract
Semiconductor quantum dots are a versatile source of single photons with tunable properties to be used in quantum-cryptographic applications. A crucial figure of merit of the emitted photons is photon number coherence (PNC), which impacts the security of many quantum communication protocols. In the process of single-photon generation, the quantum dot as a solid-state object is subject to an interaction with phonons, which can therefore indirectly affect the PNC. In this study, the origin of PNC in optically excited quantum dots and its interaction with phonons are elaborated upon. In contrast to the expectation that phonons always deteriorate coherence, PNC can be increased in a quantum dot-cavity system due to the electron?phonon interaction.
Original language | English |
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Article number | 2400455 |
Number of pages | 13 |
Journal | Advanced Quantum Technologies |
DOIs | |
Publication status | E-pub ahead of print - 8 Jan 2025 |
Austrian Fields of Science 2012
- 103026 Quantum optics
- 103011 Semiconductor physics
Keywords
- coherence
- photon number coherence
- phonon
- photonic cavity
- quantum dot
- Rabi rotations
- single photon
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Dive into the research topics of 'Photon Number Coherence in Quantum Dot-Cavity Systems can be Enhanced by Phonons'. Together they form a unique fingerprint.Projects
- 1 Active
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Beyond C: Quantum Information Systems Beyond Classical Capabilities
Walther, P., Brukner, C., Briegel, H., Kirchmair, G., Kraus, B., Lechner, W., Monz, T., Weihs, G., Roos, C., Cirac, J. I., Fink, J., Paulovics, V., Dakic, B. & Schuch, N.
1/03/19 → 28/02/27
Project: Research funding