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

Titelangaben

Hagen, Paul C. A. ; Bozzio, Mathieu ; Cygorek, Moritz ; Reiter, Doris E. ; Axt, Vollrath Martin:
Photon Number Coherence in Quantum Dot-Cavity Systems can be Enhanced by Phonons.
In: Advanced Quantum Technologies. (2025) . - 2400455.
ISSN 2511-9044
DOI: https://doi.org/10.1002/qute.202400455

Volltext

Link zum Volltext (externe URL): Volltext

Angaben zu Projekten

Projektfinanzierung: Deutsche Forschungsgemeinschaft
Funding from the AFOSR via FA9550- 21-1-0355 (QTRUST) and the Austrian Science Fund FWF 42 through [F7113] (BeyondC). Open access funding enabled and organized by Projekt DEAL.

Abstract

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.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: coherence; photon number coherence; phonon; photonic cavity; quantum dot; Rabi rotations; single photon
Fachklassifikationen: condensed matter physics (theoretical)
Institutionen der Universität: Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut
Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut > Lehrstuhl Theoretische Physik III > Lehrstuhl Theoretische Physik III - Univ.-Prof. Dr. Martin Axt
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 530 Physik
Eingestellt am: 03 Apr 2025 10:59
Letzte Änderung: 03 Apr 2025 11:11
URI: https://eref.uni-bayreuth.de/id/eprint/93185