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Course: Quantum Commun. & Info Processing 1

Department/Abbreviation: OPT/KZI1

Year: 2021

Guarantee: 'prof. Mgr. Jaromír Fiurášek, Ph.D.'

Annotation: The aim of the course is to introduce to students the basic knowledge on quantum communication and quantum information processing with discrete variable with emphasis on optical implemnetations of the various protocols for quantum information processing.

Course review:
1) Quantum description of the electromagnetic field, creation and annihilation operators, photon number operator, Fock states. 2) Sources of correlated photon pairs, spontaneous parametric down-conversion, polarization entangled photons, time-bin entanglement. 3) Quantum description of linear optical interferometers, beam splitters, wave-plates. 4) Single-photon and multi-photon interference, Hong-Ou-Mandel dip. 5) Quantum teleportation, quantum dense coding, entanglement swapping. Implementations using single photons and linear optics. 6) Optimal cloning of quantum states, universal cloning, asymmetric cloning, phase-covariant cloning. 7) Distillation and concentration of quantum entanglement. 8) Measurement induced optical nonlinearity, linear optical quantum gates, nonlinear sign gate, C-NOT gate, multi-qubit gates.