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Semiconductor Quantum Devices

Module NAT3006

This module handbook serves to describe contents, learning outcome, methods and examination type as well as linking to current dates for courses and module examination in the respective sections.

Basic Information

NAT3006 is a semester module in English language at Master’s level which is offered in winter semester.

This Module is included in the following catalogues within the study programs in physics.

  • Specific catalogue of special courses for condensed matter physics
  • Specific catalogue of special courses for Applied and Engineering Physics
  • Focus Area Experimental Quantum Science & Technology in M.Sc. Quantum Science & Technology
  • Complementary catalogue of special courses for nuclear, particle, and astrophysics
  • Complementary catalogue of special courses for Biophysics

If not stated otherwise for export to a non-physics program the student workload is given in the following table.

Total workloadContact hoursCredits (ECTS)
300 h 60 h 10 CP

Responsible coordinator of the module NAT3006 is Jonathan Finley.

Content, Learning Outcome and Preconditions

Content

Semiconductor-based quantum devices and circuits are highly promising for building the hardware needed for the implementation of future quantum technologies. They provide wide scope for implementing various quantum technologies, including quantum communication & computation and exploring the fundamental properties of entangled multi-partite quantum systems (e.g. photonic cluster states).  This course is designed specifically for Master Students at TUM, LMU following the QST, AEP and KM tracks. We will begin by exploring semiconductor heterostructures and discussing the impact on electronic properties (energy spectrum and bandstructure). Our lectures continue to discuss the growth of ultrapure quantum materials, and top-down nanostructuring methods to provide us with an understanding of methods for controlling and reading the quantum state of individual spin-qubits in semiconductor heterostructures. Our lectures will then move on to explore technological and material aspects, including the techniques used to produce semiconductor-based quantum light sources and detectors. At the end of the lecture, we will explore strongly interacting quantum fluids of light in nanostructured semiconductor microcavities.  Specific topics will include:
  • Fundamentals
    • Historical motivation, scientific & technological context.
    • Material systems (silicon-based, III-V, diamond, 2D-materials and silicon-carbide).
    • Tailoring electronic properties by nano-patterning & interactions.
    • Nano-analytical and spectroscopic methods to characterize quantum systems.
    • Quantum emitters: self-assembled quantum dots + defects in crystalline solids.
  • Quantum Electronic Devices
    • High mobility materials for quantum electronics.
    • Trapping single electrons and spins.
    • Quantum transport in semiconductor nanomaterials
    • Integer and fractional quantum Hall effects
    • Using topological excitations in semiconductors as qubits
  • Quantum Photonic Technologies
    • Photonic modes in waveguides, directional couplers and cavities.
    • Light-matter interactions in semiconductors.
    • Generating single and entangled photons on demand.
    • Simulation and computation using photons
    • Quantum limited detectors based on semi-(super)conductors
  • Quantum Fluids of Light
    • Semiconductor microcavity designs (planar, tunable, plasmonic and hybrid).
    • Microcavity polaritons.
    • Bose-Einstein condensation of MC-Polaritons (coherent and incoherent pumping).
    • Superfluid hydrodynamics of the photon fluid.
    • Strongly correlated photons.

Learning Outcome

After participation in the Module the student is able to:

  1. Understand the rationale for building semiconductor-based quantum electronic and photonic devices and combining them into quantum circuits.
  2. Understand how semiconductor nanostructures can be used to generate, manipulate and detect quantum light.
  3. Explain key-aspects of coherent light-matter interactions at the quantum limit, in the isolated and dissipative regime.
  4. Describe key quantum photonic technologies including quantum cryptography, photonic quantum simulation and linear-optics-quantum-communication.
  5. Explain how microcavity polaritons can undergo Bose-Einstein condensation and describe their non-linear quantum properties.
  6. Make the device concepts related to interacting fluids-of-light comprehensible.

Preconditions

No prerequisites beyond the requirements for the Master’s program in Quantum Science and Technology.

Courses, Learning and Teaching Methods and Literature

Courses and Schedule

TypeSWSTitleLecturer(s)DatesLinks

Learning and Teaching Methods

The module consists of a lecture series (4 SWS), comprising two lecture sessions per week.

Quantitative concepts and analysis will be presented at the blackboard or via iPad+beamer. The latter will be used to discuss the implementation of experimental set-ups. These presentations will be complemented by videos, QuTiP simulations and practical experiments.

Media

Combined Power Point and blackboard/iPad presentation, videos, simulations and experiments.

Literature

  • Mark Fox - Quantum Optics: An introduction (Oxford University Press 2006)
  • M.A. Nielsen and I.L. Chuang - Quantum Computation and Quantum Information (Cambridge University Press)
  • Peter Michler - Quantum Dots for Quantum Information Technologies - (Springer, 2017).

Module Exam

Description of exams and course work

There will be a written exam of 60 minutes duration. Therein the achievement of the competencies given in section learning outcome is tested exemplarily at least to the given cognition level using comprehension questions and sample problems.

For example an assignment in the exam might be:

  • Summarise the requirements of quantum states in a semiconductor that allow them to be used as a qubit ?
  • Explain two coherent control methods used to manipulate spin qubits in semiconductors.
  • Describe the process of coherent light-matter interaction in the rotating-wave approximation.
  • Describe how interactions can be generated between single photons in a semiconductor?
  • Explain the fundamental principles of quantum cryptography using single photons and continuous optical fields?
  • How to detect if Bose-Einstein condensation has occurred in a microcavity?

In the exam the following learning aids are permitted: Hand-written sheet with formulas + concepts, double-sided

Participation in the exercise classes is strongly recommended since the exercises prepare for the problems of the exam and rehearse the specific competencies.

Change to oral exam

In accordance with §12 (8) APSO the exam can be done as an oral exam. In this case the time duration is 25 minutes. In this case the above announcement would be updated at least four weeks before the exam date.

Exam Repetition

The exam may be repeated at the end of the semester.

Current exam dates

Currently TUMonline lists the following exam dates. In addition to the general information above please refer to the current information given during the course.

Title
TimeLocationInfoRegistration
Exam to Semiconductor Quantum Devices
Tue, 2023-02-28, 14:15 till 15:45 Hörsaal
Hörsaal
till 2023-01-15 (cancelation of registration till 2023-02-21)
Wed, 2023-03-29, 14:15 till 15:45 Hörsaal
Hörsaal
till 2023-01-15 (cancelation of registration till 2023-03-22)
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