Quantum Information

Text book

John Preskill, Quantum Information chapters 1-6 and chapter 7
additional background material (with updates to some of the chapters in Preskill)

Preskill's book provides background and context to the material covered in the lectures and exercise classes. It also contains much additional material that goes beyond the course and will not be examinated.
Exercises

problem sets 1-9
The exercise classes are the most important part of the course, and the three problem sets are representative for the written exam. Two problems in each set are marked as "homework". You are requested to submit your detailed solution of these two problems to the course assistants at the start of the class, who will then grade each with "pass" or "fail". Each "pass" gives you 1/6 of a bonus point for the written exam on 3 November, 2025.
old exams with answers
Dates & Topics

Monday 1 September
9.00-11.00
lecture 0: linear algebra refresher
linear algebra notes

Monday 8 September
9.00-11.00
exercise class 0 linear algebra problem set (no homework)

Monday 15 September
9.00-11.00
lecture 1: qubits, Bloch sphere, fidelity, quantum gates (Pauli, Hadamard, Toffoli, CNOT), density matrix, pure vs. mixed states
Preskill 2.1-2.3, 4.1.1, 6.2.0 (you may skip 2.2.1, 2.2.2, 2.3.3) (lecture notes --- recording part a and recording part b)

Monday 15 September
11.00-13.00 cancelled

Monday 22 September
9.00-11.00
exercise class 1 problems 1-3; homework 1b + 2b

Monday 29 September
9.00-11.00
lecture 2: entanglement, Schmidt decomposition, concurrence, teleportation, Bell states, Bell inequality, no-cloning theorem
Preskill 2.4, 4.1, 4.2.3, 4.2.4 (lecture notes --- recording part a and recording part b --- Bell state notebook)

Monday 6 October
9.00-11.00
lecture 3: quantum key distribution, quantum algorithms (Deutsch-Jozsa, Simon, Grover), quantum error correction
Preskill 4.2.2, 6.3-6.4, 7.1 (lecture notes --- recording part a and recording part b)

Monday 6 October
11.00-13.00
exercise class 2 problems 4-6; homework 4b + 5b

Monday 13 October
9.00-11.00
excercise class 3 problems 7-9; homework 8b + 9b

Exam: Monday 3 November 2025
9:00 - 12:00

Retake: Tuesday 2 December 2025
15:15 - 18:15

Monday 1 September	9.00-11.00	lecture 0: linear algebra refresher	linear algebra notes
Monday 8 September	9.00-11.00	exercise class 0	linear algebra problem set (no homework)
Monday 15 September	9.00-11.00	lecture 1: qubits, Bloch sphere, fidelity, quantum gates (Pauli, Hadamard, Toffoli, CNOT), density matrix, pure vs. mixed states	Preskill 2.1-2.3, 4.1.1, 6.2.0 (you may skip 2.2.1, 2.2.2, 2.3.3) (lecture notes --- recording part a and recording part b)
Monday 15 September	11.00-13.00	cancelled
Monday 22 September	9.00-11.00	exercise class 1	problems 1-3; homework 1b + 2b
Monday 29 September	9.00-11.00	lecture 2: entanglement, Schmidt decomposition, concurrence, teleportation, Bell states, Bell inequality, no-cloning theorem	Preskill 2.4, 4.1, 4.2.3, 4.2.4 (lecture notes --- recording part a and recording part b --- Bell state notebook)
Monday 6 October	9.00-11.00	lecture 3: quantum key distribution, quantum algorithms (Deutsch-Jozsa, Simon, Grover), quantum error correction	Preskill 4.2.2, 6.3-6.4, 7.1 (lecture notes --- recording part a and recording part b)
Monday 6 October	11.00-13.00	exercise class 2	problems 4-6; homework 4b + 5b
Monday 13 October	9.00-11.00	excercise class 3	problems 7-9; homework 8b + 9b

Exam: Monday 3 November 2025	9:00 - 12:00
Retake: Tuesday 2 December 2025	15:15 - 18:15