Regensburg 2025 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 34: Focus Session: Quantum Emission from Chaotic Microcavities (joint session HL/DY)

HL 34.3: Hauptvortrag

Mittwoch, 19. März 2025, 10:30–11:00, H17

Exploring Wave Chaos and Non-Hermitian Physics: Future Prospects for Quantum Emission from Chaotic Microcavities — •Jan Wiersig — Otto-von-Guericke-Universität Magdeburg, Germany

Optical microcavities play a fundamental role in many fields of basic and applied research in physics. A chaotic microcavity is a type of cavity where the light ray dynamics is (partially) chaotic [1]. This can occur in a microdisk cavity with a deformed boundary shape. Chaotic microcavities are ideal for studying ray-wave correspondence, or wave chaos, in open systems, allowing direct comparisons with experiments [2]. These cavities can also exhibit non-Hermitian phenomena such as reflectionless scattering modes [3] and exceptional points [4].

The light emission from chaotic microcavities has been studied exclusively within the classical domain. The effects of electromagnetic field quantization, including phenomena like entanglement, single-photon states, and squeezed light, remain unexplored in this context. In this talk, I will review my group's recent efforts to investigate classical emission from chaotic microcavities and quantum emission from semiconductor quantum dots embedded in conventional microcavities. Additionally, I will discuss the prospects for achieving genuine quantum emission from chaotic microcavities.

[1] H. Cao and J. Wiersig, Rev. Mod. Phys. 87, 61 (2015)

[2] X. Jiang et al., Science 358, 344 (2017)

[3] X. Jiang et al., Nat. Phys. 20, 109 (2023)

[4] C.-H. Yi et al., Phys. Rev. Lett. 120, 093902 (2018)

Keywords: optical microcavities; wave chaos; non-Hermitian physics; quantum dots