G5 Doctoral dissertation (article)
Open hybrid quantum systems (2022)

Kansanen, K. (2022). Open hybrid quantum systems [Doctoral dissertation]. University of Jyväskylä. JYU Dissertations, 552. http://urn.fi/URN:ISBN:978-951-39-9188-3

JYU authors or editors

Kansanen, Kalle

Publication details

All authors or editors: Kansanen, Kalle

eISBN: 978-951-39-9188-3

Journal or series: JYU Dissertations

eISSN: 2489-9003

Publication year: 2022

Number in series: 552

Number of pages in the book: 1 verkkoaineisto (vii, 123, 9 sivua)

Publisher: University of Jyväskylä

Place of Publication: Jyväskylä

Publication country: Finland

Publication language: English

Persistent website address: http://urn.fi/URN:ISBN:978-951-39-9188-3

Publication open access: Openly available

Publication channel open access: Open Access channel

Abstract

The recent technological and scientific advances has allowed for the fabrication and ever-progressing characterization of interacting quantum mechanical systems. I focus on the theoretical description of such hybrid quantum systems. Specifically, I discuss two prototypical classes of light-matter systems: polaritonic and optomechanical systems. They are characterized by linear and nonlinear quantum mechanical interactions, respectively. I introduce possible physical realizations, discuss light-matter interaction giving rise to polaritons, and derive optomechanical interaction for a ferromagnetic system. The experimental reality also requires an understanding of dissipation and decoherence. I therefore describe how input-output formalism can be employed to model the optical response of open hybrid quantum systems. In addition, I discuss the possibility of the electromagnetic vacuum modifying chemistry by the formation of hybridized light-matter states, polaritons. These theoretical approaches to open hybrid quantum systems have wider applicability than their physical realizations and further elucidates the possibilities of light-matter interaction. This dissertation is composed of an introductory text and five publications — three of which have been published while two are under peer review at the time of writing.

Keywords: quantum physics; quantum mechanics; polaritons; doctoral dissertations

Free keywords: kvanttimekaaniset hybridisysteemit

Fields of science: