3 papers
quant-ph2020
Effective quantum dynamics induced by a driven two-level-system bath
Katja Kustura, Oriol Romero-Isart, Carlos Gonzalez-Ballestero
We derive a Born-Markov master equation describing the dissipation induced by a bath of lossy but coherently driven two-level systems (TLS) coupled to a bosonic system via Jaynes-C…
cond-mat.mes-hall2019
Acoustic and Optical Properties of a Fast Spinning Dielectric Nanoparticle
Daniel Hümmer, René Lampert, Katja Kustura +3
Nanoparticles levitated in vacuum can be set to spin at ultimate frequencies, limited only by the tensile strength of the material. At such high frequencies, drastic changes to the…
quant-ph2018
Quadratic Quantum Hamiltonians: General Canonical Transformation to a Normal Form
Katja Kustura, Cosimo C. Rusconi, Oriol Romero-Isart
A system of linearly coupled quantum harmonic oscillators can be diagonalized when the system is dynamically stable using a Bogoliubov canonical transformation. However, this is ju…