Quantum Information Theory and Computation
instructor | nicolas macris |
office | inr 134 |
phone | +4121 6938114 |
nicolas.macris@epfl.ch | |
lectures | thursday 9h15-11h00, room INM 203 |
Special announcements
No prerequisites in quantum mechanics and/or information theory are needed.
A draft of course notes will be updated weekly here
current-draft.pdf
This is a 4 credit course. Exam form is oral.
Objectives
The support of information is material. Today one is able to manipulate matter at the nanoscale were quantum behavior becomes important. It is possible that
ultimately information processing will have to take into account the laws of quantum physics. This course introduces the theoretical concepts and methods that have been developed in the last 25 years to take advantage of guenuine quantum resources. We will see how the concepts of bit, entropy, and Shannon's theory are extended to the quantum domain. We will emphasize the role of entanglement which is a distinctly quantum feature. We will also see how useful quantum parallelism can be in the theory of quantum computation.
Outline: the course is divided in three parts
- Introduction to quantum mechanics, Qbits and quantum cryptography.
- Quantum information theory.
- Quantum computation, and quantum error correcting codes.
Part 1: QM, Qbits, Cryptography | |
---|---|
Experiments with light, analyzers and polarizers | homework-19Sept.pdf |
Mathematical formalism of quantum mechanics | homework-26Sept.pdf |
Quantum key distribution protocols | homework-17Oct.pdf |
Quantum entanglement | homework-31Oct.pdf |
Part 2: Quantum Information Theory | |
Density matrix formalism | homework-7nov.pdf |
Quantum entropy | homework-14nov.pdf |
Accessible information | |
Source coding theorem | homework-21nov.pdf |
Channel capacity theorems | |
Part 3: Computation and Error Correction | |
Models of computation and Deutsch-Josza problem | homework-29nov-2013.pdf |
Hidden subgroup, period finding, QFT, and Shor algorithm | homework-12Dec-2013.pdf |
Search algorithm (Grover) | |
Quantum error correction | |
Solutions of Problems
Exam - Presentation Subjects
Subject 1: Security of BB84, securityBB84.pdf and Chuang-Nielsen sec 12.6
Subject 2: Quantum random walks, quantum-random-walk.pdf
Subject 3: Proof of Strong Subadditivity, Chuang-Nielsen sec 11.4 + appendix 6 (Lieb's theorem)
Subject 4: Holevo-Schumacher-Westmoreland theorem (classical-quantum capacity) Chuang-Nielsen sec 12.3.2 pp 554-561 (plus notion of quantum channel)
Subject 5: Entanglement Assisted Capacity, entanglement-assisted-cap.pdf
Subject 6: Error Correcting Codes, Nielsen-Chuang chap 10 and in particular sec 10.5
Subject 7: Entanglement as a Physical Resource, Nilesen-Chuang sec 12.5 and in particular sec 12.5.2
Subject 8: Quantum Fano Inequality and Quantum Data Processing, Chuang and Nielsen sec 12.4.1 + sec 12.4.2
Subject 9: Linear Optical Computing with Photonic Qubits, ReviewModPhys2007.pdf
Subject 10: Bit Commitment, review.pdf, kent1.pdf, kent2.pdf
Papers
- A collection of reprinted articles can be found in Quantum computation and quantum information theory eds C. Macchiavello, G.M.Palma, A.Zeilinger world scientific (2000).
- A review on quantum cryptography reviews of modern physics (2002)
- Recent hacking of a QKD system based on BB84 nature comm (2011)
Books related to the lectures
- A rather complete reference Quantum Computation and Quantum Information, by Michael A. Nielsen and Isaac L. Chuang, Cambridge University Press (2004).
- A book that covers quantum computing An introduction to quantum computing, by Phillip Kaye, Raymond Laflamme and Michele Mosca, Oxford University Press (2007).
- For an emphasis on computer science aspects Quantum computing, by Mika Hirvensalo, Springer Verlag (2001).
For a more physical introduction
- A small pedagogic book A short introduction to quantum information and quantum computation, by Michel Le Bellac, Cambridge University Press (2006).
To learn quantum mechanics seriously
- Quantum Mechanics by Albert Messiah, ed Dover (two volumes bound as one).
- Feynman lectures on Physics, vol 3 by Richard P. Feynman, Robert B. Leighton, Matthew Sands (1998) Addison Wesley.