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Foundations of Quantum Theory: Non-Relativistic Approach

Prof. Sandeep Kumar Goyal · IISER Mohali

Start with lecture 1 At NPTEL

About

Quantum theory (QT) is empirically a very successful theory; there is however an apparent lack of understanding of the theory. This is mostly due to the fact that, unlike the space-time structure, the cut between the ontology and epistemology in QT is difficult to resolve. The two fundamental concepts–the non-local correlations (entanglement) between space-like separated systems and the indistinguishability (non-orthogonality) of quantum states–is widely believed to separate QT from classical theories. In this course we take a foundational approach to QT from the outside: i.e., since classical theories are completely devoid of entanglement, it is compared with various foil theories that are also non-local and indistinguishable in the sense of QT, such that their special nature in the theory can be quantified. The two concepts will be explained in this course through variety of topics it has motivated in the field of quantum information and computation, both in non relativistic settings. In the followup course proposed, we will also discuss the relativisitic approach to foundations of quantum theory.

Intended audience: Msc 1st and 2nd year, PhD students

Prerequisites: BSc in Physics and a good grasp of quantum physics

Lectures

Week 1

  1. Axiomatic Approach to Quantum Mechanics - Part 01 YouTube
  2. Axiomatic Approach to Quantum Mechanics - Part 02 YouTube
  3. Linear Vector Space YouTube

Week 2

  1. Linear Operators - Part 01 YouTube
  2. Linear Operators - Part 02 YouTube
  3. Qubits: Introduction YouTube

Week 3

  1. Qubits: State Tomography YouTube
  2. Qubits: Density Operators - Part 01 YouTube
  3. Qubits: Density Operators - Part 02 YouTube

Week 4

  1. Qubits: Unitary Transformation YouTube
  2. Qubits: Bloch Sphere YouTube

Week 5

  1. Composite Systems: Pure States, Schmidt Decomposition, Operators Acting on Composite Systems - Part 01 YouTube
  2. Composite Systems: Pure States, Schmidt Decomposition, Operators Acting on Composite Systems - Part 02 YouTube
  3. Composite Systems: Density Operators YouTube

Week 6

  1. Quantum Maps: Positive Maps YouTube
  2. Quantum Maps: Completely Positive Maps - Part 01 YouTube
  3. Quantum Maps: Completely Positive Maps - Part 02 YouTube

Week 7

  1. Measurements: Introduction YouTube
  2. Measurements: POVM YouTube
  3. Measurement: Optical Scheme for POVM YouTube

Week 8

  1. Measurements: State Discrimination YouTube
  2. Measurements: Weak Measurements YouTube
  3. Entanglement: Introduction YouTube

Week 9

  1. Entanglement Measures YouTube
  2. EPR Paradox and Bohr’s Argument, Bohm’s Argument and Mermin’s Argument - Part 01 YouTube
  3. EPR Paradox and Bohr’s Argument, Bohm’s Argument and Mermin’s Argument - Part 02 YouTube

Week 10

  1. Hidden Variable Theory, Bell model, Bell Inequality, Bell CHSH Inequality YouTube
  2. Open Quantum Systems: Introduction - Part 01 YouTube
  3. Open Quantum Systems: Introduction - Part 02 YouTube

Week 11

  1. Open Quantum Systems: Introduction - Part 03 YouTube
  2. Open Quantum Systems: Optical Master Equation, Thermalization YouTube

Week 12

  1. Open Quantum Systems: Solving Master Equaitons YouTube
  2. Open Quantum Systems: Quantum Trajectory Aproach YouTube
  3. Open Quanutm Systems: Decoherence YouTube

Syllabus and materials

At NPTEL, as the course publishes them.

Credits and licence

Institution
IISER Mohali
Department
Physics
Teacher
Prof. Sandeep Kumar Goyal
Level
Graduate
Language
English
Subjects
Physics
Source
NPTEL
Licence
CC BY-NC-SA, as NPTEL states it. Non-commercial use only. NPTEL's terms
Attribution
NPTEL states: "Distributed under Creative Commons Attribution-ShareAlike / CC BY - NC - SA", beside a BY-NC-SA badge. Coordinated by IIT Madras.
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