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Non-Hermitian Floquet dynamics in absorption spectroscopy [software] Open Access

A theory of the absorption of a laser field by an atomic or condensed matter medium is presented for the case where the medium is also interacting with a strong electromagnetic field. The rotating wave approximation is not assumed for the latter. It is shown that in the weak probe limit the Lindblad master equation reduces to a smaller system of linear equations for the relevant steady state coherences. In this limit, the complex susceptibility of the medium can be expressed in terms of individual contributions of decaying dressed states, the latter being eigenstates of a non-Hermitian Floquet Hamiltonian.

Descriptions

Resource type

Software

Contributors

Creator: Potvliege, Robert ¹
Contact person: Potvliege, Robert ¹

¹ Durham University, UK

Funder

Research methods

Other description

Contains two Python scripts.

Keyword

Floquet
Absorption spectroscopy
Non-Hermitian Hamiltonians

Subject

Atomic absorption spectroscopy
Floquet theory
Forms (Mathematics)

Location

Language

Cited in

arxiv:2406.16559

Identifier

ark:/32150/r1xg94hp571
doi:10.15128/r1xg94hp571

Rights

GNU General Public Licence 3 (GPL-3.0)

Publisher

Durham University

Date Created

File Details

Depositor

R.M.A. Potvliege

Date Uploaded

19 January 2025, 10:01:07

Date Modified

20 January 2025, 13:01:03

Audit Status

Audits have not yet been run on this file.

Characterization

File format: zip (ZIP Format)

Mime type: application/zip

File size: 20986

Last modified: 2025:01:19 10:42:17+00:00

Filename: nonHermitian_Floquet_absorption-1.1.0.zip

Original checksum: 257ed325e96e7029f18cc04bbd87294e