Quantum Computation

Spring 2024

**Course description: **Ph/CS 219C is the third term in a three-term course on
quantum computation and quantum information science. Topics covered in 219A
included density operators, quantum operations, quantum entanglement, quantum
circuits, and quantum algorithms. Ph/CS 219B covered
quantum error correction and fault-tolerant quantum computing. Ph/CS 219C will cover quantum Shannon theory and other
topics to be decided.

**Instructor:
**John Preskill,
206 Annenberg, X-6691, email: preskill(at)caltech(dot)edu

Teaching assistants:

Daniel Murphy, email: dcmurphy(at)Caltech(dot)edu

Preksha Naik, email: pnaik(at)caltech(dot)edu

TA Office hours: Tuesdays 1pm-2pm in West Bridge B151

**Canvas:**

We will be using the Canvas Learning Management System. You can login to Canvas
using your Caltech IMSS credentials.

**Class meetings**:
Monday and Wednesday 2:30 – 3:55 pm in 269 Lauritsen, starting April 1. The lectures are in-person only and will not
be recorded.

**Homework
assignments and grading**: The course is graded pass-fail. Homework
will be submitted, and graded homework will be returned, using Canvas.

You may receive partial credit if you describe a thoughtful approach to the problem, even if you are unable to solve it completely.

**Lectures and references:
**The primary reference for most of the lectures will be these lecture
notes (JP). Other useful books are

Other recommended lecture notes: John Watrous, Umesh Vazirani, Andrew Childs, Scott Aaronson, Ronald de Wolf

The first half of the course will cover material in Chapter 10 of the lecture notes. Wilde’s book (available on the arXiv) is a good supplementary reference for this material.

Material relevant for Problem Set 4 is in these notes.

Notes on cluster states and measurement-based quantum computing.

**Homework assignments:**

Problem
Set 1. Von Neumann entropy, due Thursday 18 April.

Problem
Set 2. Information gain, due Thursday 2 May.

Problem
Set 3. Quantum channel capacities, due Thursday 16 May.

Problem
Set 4. Local quantum codes, due Thursday 30 May.