Difference between revisions of "Open Quantum Optical Systems by Carlos Navarrete-Benlloch, 2017/2018 WS"

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==Resources==
 
==Resources==
  
I will develop lecture notes during the course that I will be updating on this site. The notes will have the style of the following ones that I wrote for a summer school:
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I am developing lecture notes while teaching the course. I will be updating them here:
  
[https://goo.gl/qVVWA5 '''Lecture Notes ITN Summer School''']
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[https://www.dropbox.com/s/xjdz8opc6g1cyzx/LectureNotes-OpenQuantumOpticalSystems_WS2017-2018.pdf?dl=0 '''Lecture Notes ITN Summer School''']
 
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Other useful resources that I wrote are [https://arxiv.org/abs/1504.05917 '''my PhD thesis'''] and my book on [http://iopscience.iop.org/book/978-1-6817-4405-6 '''quantum information with continuous variables'''].
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The lecture notes will be self-contained, but a list of books which I encourage students to read is given there.
 
The lecture notes will be self-contained, but a list of books which I encourage students to read is given there.
 +
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Other useful resources that I wrote are [https://arxiv.org/abs/1504.05917 '''my PhD thesis'''] and my book on [http://iopscience.iop.org/book/978-1-6817-4405-6 '''quantum information with continuous variables'''].
  
 
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Revision as of 20:09, 1 November 2017

Quantum optics treats the interaction between light and matter. You may think of light as the optical part of the electromagnetic spectrum, and matter as atoms. However, modern quantum optics covers a wild variety of systems, so that a general definition of it could be "quantum electrodynamics at low energies". Such scenario includes, for example, superconducting circuits, confined electrons, excitons in semiconductors, defects in solid state, or the center-of-mass motion of micro-, meso-, and macroscopic systems. Moreover, quantum optics is at the heart of the exponentially-growing field of quantum information processing and communication, both at the conceptual level and at the level of technological implementations. The ideas and experiments developed in quantum optics have also allowed us to take a fresh look at many-body problems of relevance for condensed matter and even high-energy physics. In addition, quantum optics holds the promise of testing foundational problems in quantum mechanics as well as physics beyond the standard model in table-sized experiments.

One of the distinct features of quantum optics is that it deals with systems which are not isolated, that is, they leak out energy and information to their surrounding environment. While this is actually the most common situation in real physical systems, it is not the one students usually encounter in their standard quantum mechanics courses. The biggest part of this course will be devoted to fill this gap: we will go through the many tools and methods that have been developed to describe open quantum optical systems. Apart from their practical use, these methods also have deep physical interpretations which will make you understand quantum mechanics much better.

Quantum optics and open systems are therefore topics that no future researcher in quantum physics should miss.

Basic information

  • Teacher: Carlos Navarrete-Benlloch.
  • Questions: email to derekkorg@gmail.com.
  • Type: 5 ECTS credits as an elective course in physics (bachelor from 5th semester on and master).
  • Time: Mondays 14:00-16:00 (theory) and Tuesdays 14:15-15:15 (practical, but don't miss it, it will contain lots of important concepts).
  • Location on MONDAYS: Hörsaal F
  • Location on TUESDAYS: Room SR 02.779 (Seminar of Theoretical Physics II, floor 2 of building B3).
  • Starting date: Monday, October 16th.
  • UnivIS site here.
  • Evaluation method (tentative, might change depending on the number of people who sign up, but I'll take the student's input and preference into consideration)
Written exam with two parts:
Multiple-choice test for basic concepts worth up to 30% points.
Essay-type questions and exercises worth up to 70% points. You'll be able to choose between several options.
• You can increase your grade by up to 0.7 by preparing Oral or written presentations closely related to the lectures or exercises.
  • Prerequisites: The course will be understandable to any student who has passed at least one course in basic quantum mechanics. Ideal for last year bachelor students, master students, and PhD students.

Content of the course

The course will contain a selection of topics from the following list:

  • Review of classical mechanics, Hilbert spaces, and quantum mechanics
  • Quantization of the electromagnetic field as a collection of harmonic oscillators: quantum states (number, coherent, squeezed, thermal,entangled,...); phase-space visualization through the Wigner function; other technologically relevant systems captured by the harmonic oscillator model.
  • Quantum theory of atoms and the two-level approximation: atomic energy spectrum; two-level approximation, dynamics, and visualization in the Bloch sphere; other systems that act as "artificial" or "engineered" atoms.
  • Atom-light interaction: Hamiltonian in the dipolar approximation; Jaynes-Cummings model; Rabi oscillations, collapses, and revivals.
  • Light in a nonlinear dielectric: Basic second-order processes and frequency generation; Hamiltonian under the independent dipole approximation; Bogoliubov diagonalization and unstable Hamiltonians.
  • Quantum optics in open systems: Open optical cavities, the master equation and the quantum Langevin equation; incoherent atomic processes, spontaneous emission, Lamb shift, and dephasing; some paradigmatic open models such as the degenerate parametric oscillator and the laser.
  • Numerical and analytical techniques for open quantum-optical systems: Superspace approach; the method of quantum-state trajectories; phase-space techniques; small quantum fluctuations around the classical state; light-matter decorrelation.
  • Detection of the output field: Input-output relations; quantum regression theorem; photodetection, bunching, and antibunching; homodyne detection and squeezing.
  • Elimination of spurious degrees of freedom: Effective Hamiltonians and master equations; projection-operator and -superoperator techniques; examples: effective motional optical potentials on a detuned atom and sideband cooling with a driven cavity mode.

An exhaustive list of topics can be found here. Don't let yourself be intimidated by the length of the list: the course will include only a small selection among these topics. Students can choose amongst the remaining topics for the oral and written presentations, as well as propose topics themselves.

Resources

I am developing lecture notes while teaching the course. I will be updating them here:

Lecture Notes ITN Summer School

The lecture notes will be self-contained, but a list of books which I encourage students to read is given there.

Other useful resources that I wrote are my PhD thesis and my book on quantum information with continuous variables.