Photon Number Coherence in Quantum Dot-Cavity Systems can be Enhanced by Phonons

Autor(en)

Paul C. A. Hagen, Mathieu Bozzio, Moritz Cygorek, Doris E. Reiter, Vollrath M. Axt

Abstrakt

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.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Universität Bayreuth, Technische Universität Dortmund

Journal

Advanced Quantum Technologies

Anzahl der Seiten

13

ISSN

2511-9044

DOI

https://doi.org/10.48550/arXiv.2409.08643

Publikationsdatum

01-2025

Peer-reviewed

Ja

ÖFOS 2012

103026 Quantenoptik, 103011 Halbleiterphysik

Schlagwörter

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/89b2fb31-fed3-4c71-8f5c-b72bf8fd99d6