Grégoire Ithier

Department of Physics

Office: Wilson Building W059

Homepage: http://personal.rhul.ac.uk/uqap/119/index.html

Quantum engineering, Decoherence, Thermalization, Mesoscopic physics, Random Matrix Theory.


Theory of Quantum Decoherence and Thermalization

• Dynamical typicality and self-averaging of reduced density matrices

• Unconventional stationary states and unconventional partition functions

• Typical out of equilibrium dynamics of strongly interacting quantum systems

• Information propagation and entanglement in large quantum systems

• Applications in condensed matter (DOS, LDOS)

Mathematical and Numerical tools for the dynamics of large quantum systems:

• Generalized central limit theorems and measure concentration

• Random Matrices (Haar invariant, Wigner, Two Body Random Interactions)

• Averages and correlations of Green functions

• Applications to the eigenvectors and eigenvalues statistics

• Numerics: exact diagonalization

Quantum engineering (experimental)

•  Superconducting circuits: quantum bits, Josephson Bifurcation Amplifiers and Cavity Bifurcation Amplifiers.

• Noise spectral analysis in superconducting circuits

• Nano-superfluidic cavities coupled to microwave resonators

• Microwave engineering at cryogenic temperatures