Previously at the iTHES research group, RIKEN.
I work with theoretical and computational solid-state physics, with focus on quantum mechanics in superconducting electrical circuits. I have worked on qubits for quantum computing, artificial-atom and resonator circuits for on-chip atomic and quantum-optics-like physics in the microwave regime, and on quantum vacuum related phenomena, such as the dynamical Casimir effect.
QuTiP is an open source framework for solving the dynamics of open quantum systems written in Python. Developed in collaboration with P.D. Nation.
wavefunction is a Python package for calculating wavefunctions, energy levels, transition rates, etc., for 1 and 2 dimensional potentials. It includes examples for the harmonic oscillator, flux and current bias phase qubits, the Morse potential, and Flux qubits.
Simple one-line command-line tool for plotting data in CSV and related formats. It uses Python/Scipy/matplotlib as backend, and displays plots on the screen or saves them to files.
GSL extention A collection of functions that extend the Gnu Scientific Library (GSL), including conversion between real and complex matrices, exponential of complex-valued matrices (a Taylor-series implementation, and a generalization of the algorithm for real-valued matrices used in the GSL, i.e. the Moler and Van Loan algorithm), and calculation of eigenvalues and eigenvectors for complex-valued GSL matrices by using the ZGEEV LAPACK routine.
MLIB A small stand-alone C library of math functions, including data structures and functions for polynomials, evaluation of Hermite polynomials, factorials, real-valued and complex-valued adaptive quadrature (integral evaluation).
My Ph.D. thesis on "Quantum mechanics in superconducting circuits and nanomechanical devices" [PDF] was defended on Oct. 2nd, 2009. My supervisors were by Prof. Göran Johansson at Chalmers University of Technology, and Prof. Franco Nori at RIKEN.
Copyright © J Robert Johansson.