# Course - Quantum Information HT24

> Source: https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/ · Updated: 2025-09-30 · Tags: uni, course

> An introduction to quantum information and quantum computing, starting from a mathematical framework which is abstracted from the underlying physics ([Notes - Quantum Information HT24, Rules of quantum theory](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/rules-of-quantum-theory/)). Covers lots of different topics, often phrased in terms of games where you can get a higher payoff if you have access to quantum resources rather than purely classical ones.

- [Course Webpage](https://www.cs.ox.ac.uk/teaching/courses/2023-2024/qi/)
- Lecture notes:
	- [1, States and Measurements](https://courses.cs.ox.ac.uk/pluginfile.php/12940/mod_label/intro/Notes01_StatesAndMeasurements.pdf "Notes 1 - States and Measurements")
	- [2, Reversible Processes](https://courses.cs.ox.ac.uk/pluginfile.php/12940/mod_label/intro/Notes02_ReversibleProcesses.pdf "Notes 2 - Reversible Processes")
	- [3, Bloch Sphere](https://courses.cs.ox.ac.uk/pluginfile.php/12940/mod_label/intro/Notes03_BlochSphere.pdf "Notes 3 - Bloch Sphere")
	- [4, Composite Systems](https://courses.cs.ox.ac.uk/pluginfile.php/12940/mod_label/intro/Notes04_CompositeSystems.pdf "Notes 4 - Composite Systems")
	- [5, Quantum Steering](https://courses.cs.ox.ac.uk/pluginfile.php/12940/mod_label/intro/Notes05_QuantumSteering.pdf "Notes 5 - Quantum Steering")
	- [6, No Signalling](https://courses.cs.ox.ac.uk/pluginfile.php/12940/mod_label/intro/Notes06_NoSignalling.pdf "Notes 6 - No Signalling")
	- [7, The CHSH Game](https://courses.cs.ox.ac.uk/pluginfile.php/12940/mod_label/intro/Notes07_TheCHSHGame.pdf "Notes 7 - The CHSH Game")
	- [8, The GHZ Game](https://courses.cs.ox.ac.uk/pluginfile.php/12940/mod_label/intro/Notes08_TheGHZGame.pdf "Notes 8 - The GHZ Game")
	- [9, Quantum Circuit Model](https://courses.cs.ox.ac.uk/pluginfile.php/12940/mod_label/intro/Notes09_QuantumCircuitModel.pdf "Notes 9 - Quantum Circuit Model")
	- [10, Quantum Query Complexity](https://courses.cs.ox.ac.uk/pluginfile.php/12940/mod_label/intro/Notes10_QuantumQueryComplexity.pdf "Notes 10 - Quantum Query Complexity")
	- [11, Quantum Search](https://courses.cs.ox.ac.uk/pluginfile.php/12940/mod_label/intro/Notes11_QuantumSearch.pdf "Notes 11 - Quantum Search")
	- [12, Shors Algorithm](https://courses.cs.ox.ac.uk/pluginfile.php/12940/mod_label/intro/Notes12_ShorsAlgorithm.pdf "Notes 12 - Shors Algorithm")
	- [13, Density Matrix](https://courses.cs.ox.ac.uk/pluginfile.php/12940/mod_label/intro/Notes13_DensityMatrix.pdf "Notes 13 - Density Matrix")
	- [14, No Cloning](https://courses.cs.ox.ac.uk/pluginfile.php/12940/mod_label/intro/Notes14_NoCloning.pdf "Notes 14 - No Cloning")
	- [15, Quantum Teleportation](https://courses.cs.ox.ac.uk/pluginfile.php/12940/mod_label/intro/Notes15_QuantumTeleportation.pdf "Notes 15 - Quantum Teleportation")
	- [Off Syllabus - 1 - Cracking RSA](https://courses.cs.ox.ac.uk/pluginfile.php/12940/mod_label/intro/OffSyllabus1_CrackingRSA.pdf "Off Syllabus 1 - Cracking RSA")
	- [Off Syllabus - 2 - Purification](https://courses.cs.ox.ac.uk/pluginfile.php/12940/mod_label/intro/OffSyllabus2_Purification.pdf "Off Syllabus 2 - Purification")
	- [Off Syllabus - 3 - Secure Communication](https://courses.cs.ox.ac.uk/pluginfile.php/12940/mod_label/intro/OffSyllabus3_SecureCommunication.pdf "Off Syllabus 3 - Secure Communication")
- Other courses this term: [Courses HT24](https://ollybritton.com/notes/uni/part-a/ht24/courses/)
- Related books:
	- [Quantum Computing Since Democritus, Aaronson](https://ollybritton.com/notes/books/quantum-computing-since-democritus/)

### Notes
- [Notes - Quantum Information HT24, Basic measurements](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/basic-measurements/)
- [Notes - Quantum Information HT24, Bell basis](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/bell-basis/)
- [Notes - Quantum Information HT24, Bloch sphere](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/bloch-sphere/)
- [Notes - Quantum Information HT24, Bra-ket notation](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/bra-ket-notation/)
- [Notes - Quantum Information HT24, Composite systems](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/composite-systems/)
- [Notes - Quantum Information HT24, Dense coding protocol](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/dense-coding-protocol/)
- [Notes - Quantum Information HT24, Density matrices](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/density-matrices/)
- [Notes - Quantum Information HT24, Grover's algorithm](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/grovers-algorithm/)
- [Notes - Quantum Information HT24, Misc](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/misc/)
- [Notes - Quantum Information HT24, No-cloning theorem](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/no-cloning-theorem/)
- [Notes - Quantum Information HT24, No-signalling theorem](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/no-signalling-theorem/)
- [Notes - Quantum Information HT24, Quantum circuit model](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/quantum-circuit-model/)
- [Notes - Quantum Information HT24, Quantum communication](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/quantum-communication/)
- [Notes - Quantum Information HT24, Quantum gates](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/quantum-gates/)
- [Notes - Quantum Information HT24, Quantum steering](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/quantum-steering/)
- [Notes - Quantum Information HT24, Quantum teleportation](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/quantum-teleportation/)
- [Notes - Quantum Information HT24, Qubits](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/qubits/)
- [Notes - Quantum Information HT24, Query complexity](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/query-complexity/)
- [Notes - Quantum Information HT24, Rules of quantum theory](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/rules-of-quantum-theory/)
- [Notes - Quantum Information HT24, Shor's algorithm](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/shors-algorithm/)
- [Notes - Quantum Information HT24, Tensor products](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/tensor-products/)
- [Notes - Quantum Information HT24, CHSH game](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/chsh-game/)
- [Notes - Quantum Information HT24, The Deutsch-Joza game](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/the-deutsch-joza-game/)
- [Notes - Quantum Information HT24, The GHZ game](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/the-ghz-game/)
- [Notes - Quantum Information HT24, Reversible processes](https://ollybritton.com/notes/uni/part-a/ht24/quantum-information/notes/reversible-processes/)

### Problem Sheets
- [Sheet 1](https://courses.cs.ox.ac.uk/mod/resource/view.php?id=2099)
- [Sheet 2](https://courses.cs.ox.ac.uk/mod/resource/view.php?id=2216)
- [Sheet 3](https://courses.cs.ox.ac.uk/mod/resource/view.php?id=2217)
- [Sheet 4](https://courses.cs.ox.ac.uk/mod/resource/view.php?id=2218)
- [Sheet 5](https://courses.cs.ox.ac.uk/mod/resource/view.php?id=2219)
- [Sheet 6](https://courses.cs.ox.ac.uk/mod/resource/view.php?id=2220)

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