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Experimental Physics 4 in English 
Summer semester 2019
Chair of Semiconductor Quantum Nanosystems (E24) (Prof. Finley)
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This course tracks loosely the German language course of the same name and focuses on Quantum Mechanics, the Physics of Atoms and Molecules and their Interaction with Electromagnetic Fields. Notably, we will review the "machinery" of Quantum Mechanics before discussing the application of the theory to the Hydrogen Atom. We will then move on to explore the interaction of EM fields with the H-atom before moving on to discuss other "one-electron" atoms, such as the alkali atoms. We will then move on to explore the quantum mechanics of angular momentum before turning our attention to Helium and exchange symmetries. The interactions between quantised magnetic moments (spins) in atoms will then be discussed and we will explore how they interact to produce fine and hyperfine effects int he energy spectrum of atoms. Our discussion of atoms will be completed by a discussion of the action of external electric (Stark effect) and magnetic (Zeeman effect) fields on atoms. Given time at the end of the semester, we will study basic quantum optics of atoms in the context of few-level lasers and introduce a couple of modern themes in the study of ultra-cold quantum gases of atoms. The final topic will concern the physics of molecules, including the formation of chemical bonds to form molecules and their rotational, vibrational and optical properties.


- The elements of quantum mechanics
- One electron atoms
- Interaction of one electron atoms with light
- Fine structure
- Two electron atoms
- Many electron atoms
- Masers and lasers
- Lasers and spectroscopy
- Atoms in intense laser fields
- Laser cooling and trapping of neutral atoms
- Bose Einstein condensation
- Physics of molecular bonds
- Vibrational and rotational properties of molecules
- Optical properties of molecular systems-
Study of Physics to 4th Semester level. This includes EM-theory, Classical Mechanics, Optics as well as Linear Algebra.
Upon completion of this course the student will be in a position to :

- Apply quantum mechanics to describe the electronic structure of one-electron atoms in the English language

- Understand the properties of the H-atom and be analyse the hierarchy of energy scales (coarse, fine- and hyperfine structure)

- Understand the concept of spin and be able to apply their understanding to evaluate the energy scale of fine-structure interactions.

- Apply QM to calculate the major interactions in the physics of two-electron atoms.

- Understand the concept of direct and exchange Coulomb interactions.

- Understand and apply how angular mementum Coupling Schemes in Multi-Electron Atoms give rise to fine-structure and hyperfine structure in the optical spectrum of few-electron atoms.

- Understand how atoms behave in eternal DC Magnetic Fields (Zeeman effect) and DC Electric Fields (DC Stark Effect)

- Understand the origin of the radiative coupling of electronic states in atoms to light and apply QM to calculate the transition rates, factors influencing radiative line widths.

- Understand the origin of optical selection rules caused by electric dipole, quadrupole and magnetic-dipole absorption.

- Understand the origin of Einstein Coefficients, Radiative Rate Equations and Solve them to understand the need for Spontaneous and Stimulated Emission.

- Be aware of coherent phenomena such as Rabi Oscillations, Ramsey Interferometry and the AC Stark Effect.

- Understand the operation of MASERs and LASERs and the conditions required to have stimulated emission dominate.
class lecture
2 Hours per week (Lecture)
2 Hour per week (Preparation / Reading)
Für die Anmeldung zur Teilnahme müssen Sie sich in TUMonline als Studierende*r identifizieren.
A script will be provided to accompany the lecture course. Other useful books are:

• Wendell T., III Hill and Chi H. Lee, Light-Matter Interaction: Atoms and Molecules in External Fields and Nonlinear Optics (Wiley, 2007)
• M. Auzinsh, D. Budker, and S. M. Rochester, Optically Polarized Atoms (Oxford, 2010)
• Gilbert Grynberg, Alain Aspect, and Claude Fabre, Introduction to Quantum Optics (Cam-
bridge, 2010)
• W. Demtröder, Atoms, Molecules and Photons (Springer, 2006)
• Claude Cohen-Tannoudji, Bernard Diu, Frank Laloe, Quantum Mechanics (Wiley, 1977)
• C. J. Foot, Atomic Physics (Oxford, 2005)
• Mark Fox, Optical Properties of Solids (Oxford, 2001)
• B. H. Bransden and C. J. Joachain, Physics of Atoms and Molecules (Prentice Hall, 2003)
• Wolfgang Nolting and Anupuru Ramakanth, Quantum Theory of Magnetism (Springer, 2006)
• Patrik Fazekas, Lecture Notes on Electron Correlation and Magnetism (World Scientific, 1999)
• W. J. Thompson, Angular Momentum (Wiley, 2004)
Online information
e-learning course (moodle)