Suchergebnis: Katalogdaten im Frühjahrssemester 2012

Physik Master Information
Wahlfächer
Physikalische und mathematische Wahlfächer
Auswahl: Quantenelektronik
NummerTitelTypECTSUmfangDozierende
402-0412-12LStrong Field Laser IonizationW4 KP2VA. Landsman
KurzbeschreibungThe course is a theoretical introduction to strong field laser ionization of atoms and molecules. Particular focus will be on tunnel ionization which is behind many recent experiments and applications, both in chemistry and physics.
Lernziel
InhaltThe course is a theoretical introduction to strong field laser
ionization of atoms and molecules. Particular focus will be on tunnel
ionization which is behind many recent experiments and applications,
both in chemistry and physics. Common approaches to analyzing
ionization events will be presented, including Keldysh, Strong-Field
and others. The aim is to both understand ionization from a
theoretical perspective and to put into context recent experimental
results. With this in mind, important phenomena created by strong
field ionization, such as high harmonic generation (HHG) and Rydberg
state creation will be explained. Among the fundamental physics
questions addressed will be the much debated question of tunneling
time in ionization, defining tunneling time and relating it to recent
experimental measurement and theoretical literature.
402-0464-00LOptical Properties of SemiconductorsW6 KP2V + 1UJ. Faist
KurzbeschreibungThe rich physics of the optical properties of semiconductors, as well as the advanced processing available on these material, enabled numerous applications in everyday devices (semiconductor lasers, LEDs) as well as the realization of new physical concepts. This lecture aims at giving an introduction to this topic.
Lernziel
InhaltThe rich physics of the optical properties of semiconductors, as well as the advanced processing available on these material, enabled numerous applications in everyday devices (semiconductor lasers, LEDs) as well as the realization of new physical concepts. This lecture aims at giving an introduction to this topic.
Bulk semiconductors:
- Interband bulk absorption - matrix element, kp approach. Relation to band structure and material
- Semiconductor under electron-hole injection: optical gain
- Low-level excitations: impurity states, excitons
- Free carrier absorption: Drude and quantum model
Quantum wells:
- Optical properties of quantum wells: matrix elements and selection rules
- Carrier dynamics, gain.
- Intersubband absorption
- Introduction to many-body properties
- Some non-linear properties of quantum wells
Quantum structures:
- Microcavities
- Introduction to quantum wires and dots
402-0404-00LLasersystems and ApplicationsW6 KP2V + 1UM. Sigrist
KurzbeschreibungPhysikalische Grundlagen, Daten und Anwendungen verschiedener Laserquellen
LernzielStudierende lernen Charakteristiken und ausgewählte Anwendungen von wichtigen Laserquellen kennen.
InhaltAufbauend auf 'Quantenelektronik I' werden die Charakteristiken spezifischer, hauptsächlich abstimmbarer, Lasersysteme sowie einige aktuelle Laseranwendungen behandelt. Folgende Inhalte sind vorgesehen: Gaslaser, Farbstofflaser, Halbleiterlaser, Festkörperlaser. Laseranwendungen in der Spektroskopie, Analytik, Materialbearbeitung und Medizin.
SkriptF. K. Kneubühl, M. W. Sigrist: "Laser", Teubner+Vieweg, 7. Auflage (2008), ISBN 978-3-8351-0145-6
Voraussetzungen / BesonderesAuf Wunsch der Studierenden kann der Kurs auch in Deutsch gehalten werden.
402-0484-00LFrom Bose-Einstein Condensation to Synthetic Quantum Many-Body SystemsW6 KP2V + 1UT. Esslinger
KurzbeschreibungThe ability to cool dilute gases to nano-Kelvin temperatures provides a unique access to macroscopic quantum phenomena such as Bose-Einstein condensation. This lecture will give an introduction to this dynamic field and insight into the current state of research, where synthetic quantum many-body systems are created and investigated.
LernzielThe lecture is intended to convey a basic understanding for the current research on quantum gases. Emphasis will be put on the connection between theory and experimental observation. It will enable students to read and understand publications in this field.
InhaltThe non-interacting Bose gas
Interactions between atoms
The Bose-condensed state
Elementary excitations
Vortices
Superfluidity
Interference and Correlations
Fermi gases and Fermionic superfluidity
Optical lattices and the connection to solid state physics.
Skriptno script
LiteraturC. J. Pethick and H. Smith, Bose-Einstein condensation in dilute Gases, Cambridge.
Proceedings of the Enrico Fermi International School of Physics, Vol. CXL, ed. M. Inguscio, S. Stringari, and C.E. Wieman (IOS Press, Amsterdam, 1999).
Voraussetzungen / BesonderesFormer course title: "Quantum Gases"
402-0577-00LQuantum Systems for Information TechnologyW8 KP2V + 2US. Filipp
KurzbeschreibungIntroduction to experimental quantum information processing (QIP). Quantum bits. Coherent Control. Quantum Measurement. Decoherence. Microscopic and macroscopic quantum systems. Nuclear magnetic resonance (NMR) in molecules and solids. Ions and neutral atoms in electromagnetic traps. Charges and spins in quantum dots. Charges and flux quanta in superconducting circuits. Novel hybrid systems.
LernzielIn recent years the realm of quantum mechanics has entered the domain of information technology. Enormous progress in the physical sciences and in engineering and technology has allowed us to envisage building novel types of information processors based on the concepts of quantum physics. In these processors information is stored in the quantum state of physical systems forming quantum bits (qubits). The interaction between qubits is controlled and the resulting states are read out on the level of single quanta in order to process information. Realizing such challenging tasks may allow constructing an information processor much more powerful than a classical computer. The aim of this class is to give a thorough introduction to physical implementations pursued in current research for realizing quantum information processors. The field of quantum information science is one of the fastest growing and most active domains of research in modern physics.
InhaltA syllabus will be provided on the class web server at the beginning of the term (see section 'Besonderes'/'Notice').
SkriptElectronically available lecture notes will be published on the class web server (see section 'Besonderes'/'Notice').
LiteraturQuantum computation and quantum information / Michael A. Nielsen & Isaac L. Chuang. Reprinted. Cambridge : Cambridge University Press ; 2001.. 676 p. : ill.. [004153791].

Additional literature and reading material will be provided on the class web server (see section 'Besonderes'/'Notice').
Voraussetzungen / BesonderesThe class will be taught in English language.

Basic knowledge of quantum mechanics is required, prior knowledge in atomic physics, quantum electronics, and solid state physics is advantageous.

More information on this class can be found on the web site: http://www.solid.phys.ethz.ch/wallraff/content/courses/coursesmain.html
402-0498-00LCavity QED and Ion Trap PhysicsW6 KP2V + 1UJ. Home
KurzbeschreibungThis course will cover the physics of systems where harmonic oscillators are coupled to single or multiple spin systems. Experimental realizations include photons trapped in high-finesse cavities and atomic ions trapped by electro-magnetic fields. These approaches have achieved an extraordinary level of quantum control, providing leading technologies for quantum information processing.
LernzielThe objective is to provide a basis for understanding the wide range of research currently being performed on fundamental quantum mechanics with spin-spring systems, including cavity-QED and ion traps. During the course students would expect to gain an understanding of the current frontier of research in these areas, and the challenges which must be overcome to make further advances. This should provide a solid background for tackling recently published research in these fields, including experimental realisations of quantum information processing.
InhaltThis course will cover cavity-QED and ion trap physics, providing links and differences between the two. It aims to cover both theoretical and experimental aspects. In all experimental settings the role of decoherence and the quantum-classical transition is of great importance, and this will therefore form one of the key components of the course.

Topics which will be covered include:

Cavity QED
(atoms/spins coupled to a quantized field mode)
Ion trap
(charged atoms coupled to a quantized motional mode)

Quantum state engineering:
Coherent and squeezed states
Entangled states
Schrodinger's cat states

Decoherence:
The quantum optical master equation
Monte-Carlo wavefunction
Quantum measurements
Entanglement and decoherence

Applications:
Quantum information processing
Quantum sensing
LiteraturS. Haroche and J-M. Raimond "Exploring the Quantum" (required)
M. Scully and M.S. Zubairy, Quantum Optics (recommended)
Voraussetzungen / BesonderesThis course requires a good working knowledge in non-relativistic quantum mechanics. Prior knowledge of quantum optics is recommended but not required.
402-0472-00LMesoscopic Quantum Optics
Findet dieses Semester nicht statt.
W8 KP3V + 1UA. Imamoglu
KurzbeschreibungDescription of open quantum systems using quantum trajectories. Cascaded quantum systems. Decoherence and quantum measurements. Elements of single quantum dot spectroscopy: interaction effects. Spin-reservoir coupling.
LernzielThis course covers basic concepts in mesoscopic quantum optics and builds up on the material covered in the Quantum Optics course. The specific topics that will be discussed include emitter-field interaction in the electric-dipole limit, spontaneous emission, density operator and the optical Bloch equations, quantum optical phenomena in quantum dots (photon antibunching, cavity-QED) and confined spin dynamics.
InhaltDescription of open quantum systems using quantum trajectories. Cascaded quantum systems. Decoherence and quantum measurements. Elements of single quantum dot spectroscopy: interaction effects. Spin-reservoir coupling.
SkriptY. Yamamoto and A. Imamoglu, "Mesoscopic Quantum Optics," (Wiley, 1999).
151-0172-00LDevices and Systems Information W5 KP4GC. Hierold, A. Hierlemann
KurzbeschreibungThe students are introduced to the fundamentals and physics of microelectronic devices as well as to microsystems in general (MEMS). They will be able to apply this knowledge for system research and development and to assess and apply principles, concepts and methods from a broad range of technical and scientific disciplines for innovative products.
LernzielThe students are introduced to the fundamentals and physics of microelectronic devices as well as to microsystems in general (MEMS), basic electronic circuits for sensors, RF-MEMS, chemical microsystems, BioMEMS and microfluidics, magnetic sensors and optical devices, and in particular to the concepts of Nanosystems (focus on carbon nanotubes), based on the respective state-of-research in the field. They will be able to apply this knowledge for system research and development and to assess and apply principles, concepts and methods from a broad range of technical and scientific disciplines for innovative products.
InhaltIntroduction to semiconductors, MOSFET transistors
Basic electronic circuits for sensors and microsystems
Transducer Fundamentals
Chemical sensors and biosensors, microfluidics and bioMEMS
RF MEMS
Magnetic Sensors, optical Devices
Nanosystem concepts
Skripthandouts
402-0486-00LFrontiers of Quantum Gas Research
Findet dieses Semester nicht statt.
W6 KP2V + 1UT. Esslinger
KurzbeschreibungThe lecture will discuss the most relevant recent research in the field of quantum gases. Bosonic and fermionic quantum gases with emphasis on strong interactions will be studied. The topics include low dimensional systems, optical lattices and quantum simulation, vortex physics and quantum gases in optical cavities.
LernzielThe lecture is intended to convey an advanced understanding for the current research on quantum gases. Emphasis will be put on the connection between theory and experimental observation. It will enable students to follow current publications in this field.
InhaltQuantum gases in one and two dimensions
Optical lattices, Hubbard physics and quantum simulation
Vortices
Quantum gases in optical cavities
Skriptno script
LiteraturC. J. Pethick and H. Smith, Bose-Einstein condensation in dilute Gases, Cambridge.
T. Giamarchi, Quantum Physics in one dimension
I. Bloch, J. Dalibard, W. Zwerger, Many-body physics with ultracold gases, Rev. Mod. Phys. 80, 885 (2008)
Proceedings of the Enrico Fermi International School of Physics, Vol. CLXIV, ed. M. Inguscio, W. Ketterle, and C. Salomon (IOS Press, Amsterdam, 2007).
Additional literature will be distributed during the lecture
Voraussetzungen / BesonderesFor two lectures on special topics we will invite external expert lecturers. The exercise classes will be in the form of a Journal Club, in which a student presents the achievements of a recent important research paper.
Additional information will become available on: www.quantumoptics.ethz.ch
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