UE: Introduction au monde quantique
Licence Internationale, année 2, second semestre, 2016/2017
Enseignant: Géraud Sénizergues (Professeur d'Informatique).
Subjects (to be presented by the students):
 1Quantum keyexchange protocol BB84:
Utilisation en grandeur reelle:
(elections en Suisse, etc ...)
wikipedia
Students: A. Veschambre, S. Toth
 2Quantum Circuits:
Quantum versus classical circuits.
Logical design.
Physical realisation.
a bunch of slides
Students:
 3Teleportation:
Some experimental realizations:
wikipedia
article de presse
Students: A. Bouneau, R.R. Khelafi
 4Dwave:
Founded in 1999, DWave Systems is the world's first quantum computing company.
What kind of computers does it develop ?
What kind of factories (or public institutions) buy its computers ?
wikipedia
Dwave website
Students: S. Tricoire, Gabriel Weil
Talk: Thursday April 6th.
 5QuantumID:
The commercial society quantumID
develops several quantum systems (though not a full quantumcomputer).
The company has realized several world premieres in quantum technology innovation.
Describe the products of this society as well as its customers.
wikipedia
quantumID website
Students:
Projects (to be prepared by the students):
List of subjects
2 Planned courses:
 LECTURE 1:
Introduction to quantum computing.
1 Problems raised by the physical laws which are valid at the
scale of single particles:
 can we "read " information without destroying it ?
 can we "transmit" information ? (seems difficult since we cannot copy
a physical state)
 since the evolution of any system must be described by a unitary transformation,
only reversible computations are allowed. What kind of functions
are "reversibly computable"?
2 Some historical cornerstones:
70: Study of reversible computation [Landauer, Bennett]
80: Tentative to simulate efficiently on a classical computer the quantum phenomena.
Due to the difficulties, inversion of the objectives:
what could we compute with quantum computers? [R. Feynman]
84: Quantum cryptography [Bennett, Brassard ]
85: Universal quntum machine [D. Deutsch]
94: Polynomial quantum algorithm for the factorization problem (P. Shor)
2004: Teleportation
2012: Haroche is awarded the Nobel prize in physics. Some of his works
are related to quantum computing (he gave lectures at ENS Lyon, 2007. on this subject).

LECTURE 2:
1 What is a qbit ?
Example of a polarized photon. Information carried by the polarizationdirection.
2 What operations can we perform on a qbit ?
 measurement
 evolution
(recalls on Hilbertspaces; recalls on the postulates of quantum mechanics)

LECTURE 3:
Quantum cryptography.
[BennettBrassard 84] protocol allows to agree on a secretkey, using
an authentified channel. Description of the protocol.