INTRODUCTION TO THE QUANTUM OPTICS


course ID

Lecturer

CFU

6

Length

14 Weeks

Semester DD

First


Course details

From the elettromagnetic field to light. The Einstein coefficients . Radiative transitions in atoms, line broadening, general information about the laser . Classical fluctuations of the intensity of a source, the different time scales involved. Connection between measurable quantities ( absorption, reflectivity , refractive index ) and microscopic characteristics of a material. Causal linear response theory : the dispersion relations of Kramers - Kronig. The quantization of the electromagnetic field: the photon. Quantum radiation-matter interaction . Radiation characteristics of classical coherence of the first and second order. Quantum formulation: how to change the formalism to the consistency of the first and second order. Differences and similarities. The Young's experiment. The experiment of Hanbury -Brown and Twiss .Coherent state of radiation and state number of photons. Squeezed states
LABORATORY EXPERIMENTS
The simulation of a chaotic source of radiation
The experiment of Young in the original form of 1803
The measurement with a photomultiplier of single photon, separation of the signal from the noise. Statistic of the counts for different types of beam

Objectives

LEARNING OUTCOMES:
The quantization of the electromagnetic field. Quantum states of electromagnetic radiation
Description and demonstration (also by means of some experimental simulations) of the coherence properties of the first and second order of various light sources. The quantization of the electromagnetic field. Quantum states of electromagnetic radiation

KNOWLEDGE AND UNDERSTANDING:
Acquisition of the general principles and of the phenomenology of electromagnetic radiation.
Understanding of the interaction of matter radiation within the semiclassical and quantum theory. Understanding pecularities of quantum radiation states compared to classical states.

APPLYING KNOWLEDGE AND UNDERSTANDING:
Knowing how to connect the microscopic and macroscopic vision of absorption (the optical constants). Preparation and interpretation of simple experiments and the limits of applicability of the studied theory

MAKING JUDGEMENTS:


COMMUNICATION SKILLS:
Description and discussion of laboratory experiments and experimental conditions in relation to the acquired knowledge.

LEARNING SKILLS: