Semester page for FYS5419 - Spring 2025

Dear all, welcome back to FYS5419/9419. We hope you've all had a great weekend.

The plans for this week (see lecture notes either as PDF or jupyter-notebook at https://github.com/CompPhysics/QuantumComputingMachineLearning/tree/gh-pages/doc/pub/week5)

are:

The first part of the lecture will focus

1. Review from last week, one-qubit gates and one-qubit Hamiltonian (using slides from last week)

2. Reminder and review of density matrices and measurements from week 2

3. Schmidt decomposition and entanglement

4. Discussion of entropies, classical information entropy (Shannon entropy) and von Neumann entropy

The second part focuses on

1. Two-qubit Hamiltonians...

Dear all, welcome back to FYS5419/9419. 

The lecture notes for this week are at (jupyter-notebook or PDF formats)  https://github.com/CompPhysics/QuantumComputingMachineLearning/tree/gh-pages/doc/pub/week4

This week (note changes from original plan)  we plan to discuss

1. Reminder from last week on gates and circuits

2. One-qubit and two-qubit gates, background and realizations

3. Simple Hamiltonian systems of relevance for project

Readings

1. For the discussion of one-qubit, two-qubit and other gates, sections 2.6-2.11 and 3.1-3.4 of Hundt's book Quantum Computing for Programmers, contain most of the relevant information.

Dear all, this week we will spend time only on exercises and in particular the first exercise in project 1.

There is thus no lecture, only work on exercises and project 1.  We recommend taking a look at the jupyter-notebook for week 3, see https://github.com/CompPhysics/QuantumComputingMachineLearning/blob/gh-pages/doc/pub/week3/ipynb/week3.ipynbLinks to an external site.

There we discuss how one can use qiskit to test the Bell states. Furthermore, the jupyter-notebook contains material about the most common gates.

We will discuss in more detail the physical meaning of these gate operations next week. This week we will simply define them and use them in studies of the Bell states.

The first exercise in project 1 deals thus with setting up your own cod...