# Search result: Catalogue data in Spring Semester 2012

Physics Master | ||||||

Electives | ||||||

Electives: Physics and Mathematics | ||||||

Selection: Quantum Electronics | ||||||

Number | Title | Type | ECTS | Hours | Lecturers | |
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402-0412-12L | Strong Field Laser Ionization | W | 4 credits | 2V | A. Landsman | |

Abstract | The 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. | |||||

Objective | ||||||

Content | The 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. | |||||

402-0464-00L | Optical Properties of Semiconductors | W | 6 credits | 2V + 1U | J. Faist | |

Abstract | The 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. | |||||

Objective | ||||||

Content | The 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 | |||||

402-0404-00L | Lasersystems and Applications | W | 6 credits | 2V + 1U | M. Sigrist | |

Abstract | Basic physics, data and applications of various laser sources | |||||

Objective | Students will know main features and selected applications of some important laser sources | |||||

Content | Based on "Quantum Electronics I" the main features of some important laser sources, particularly tunable laser systems, are discussed. Emphasis is put on gas lasers, dye lasers, semiconductor and solid state lasers. Laser applications in spectroscopy, sensing, material processing and medicine will be presented. | |||||

Lecture notes | F. K. Kneubühl, M. W. Sigrist: "Laser", Vieweg+Teubner, 7. Auflage (2008), ISBN 978-3-8351-0145-6 | |||||

Prerequisites / Notice | Depending on the students' preference, this course will be held in English or German. | |||||

402-0484-00L | From Bose-Einstein Condensation to Synthetic Quantum Many-Body Systems | W | 6 credits | 2V + 1U | T. Esslinger | |

Abstract | The 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. | |||||

Objective | The 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. | |||||

Content | The 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. | |||||

Lecture notes | no script | |||||

Literature | C. 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). | |||||

Prerequisites / Notice | Former course title: "Quantum Gases" | |||||

402-0577-00L | Quantum Systems for Information Technology | W | 8 credits | 2V + 2U | S. Filipp | |

Abstract | Introduction 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. | |||||

Objective | In 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. | |||||

Content | A syllabus will be provided on the class web server at the beginning of the term (see section 'Besonderes'/'Notice'). | |||||

Lecture notes | Electronically available lecture notes will be published on the class web server (see section 'Besonderes'/'Notice'). | |||||

Literature | Quantum 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'). | |||||

Prerequisites / Notice | The 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 | |||||

402-0498-00L | Cavity QED and Ion Trap Physics | W | 6 credits | 2V + 1U | J. Home | |

Abstract | This 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. | |||||

Objective | The 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. | |||||

Content | This 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 | |||||

Literature | S. Haroche and J-M. Raimond "Exploring the Quantum" (required) M. Scully and M.S. Zubairy, Quantum Optics (recommended) | |||||

Prerequisites / Notice | This course requires a good working knowledge in non-relativistic quantum mechanics. Prior knowledge of quantum optics is recommended but not required. | |||||

402-0472-00L | Mesoscopic Quantum OpticsDoes not take place this semester. | W | 8 credits | 3V + 1U | A. Imamoglu | |

Abstract | Description 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. | |||||

Objective | This 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. | |||||

Content | Description 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. | |||||

Lecture notes | Y. Yamamoto and A. Imamoglu, "Mesoscopic Quantum Optics," (Wiley, 1999). | |||||

151-0172-00L | Devices and Systems | W | 5 credits | 4G | C. Hierold, A. Hierlemann | |

Abstract | The 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. | |||||

Objective | The 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. | |||||

Content | Introduction 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 | |||||

Lecture notes | handouts | |||||

402-0486-00L | Frontiers of Quantum Gas ResearchDoes not take place this semester. | W | 6 credits | 2V + 1U | T. Esslinger | |

Abstract | The 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. | |||||

Objective | The 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. | |||||

Content | Quantum gases in one and two dimensions Optical lattices, Hubbard physics and quantum simulation Vortices Quantum gases in optical cavities | |||||

Lecture notes | no script | |||||

Literature | C. 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 | |||||

Prerequisites / Notice | For 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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