Optique quantique - Département de Physique de l'Ecole Normale supérieure

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Optique quantique

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November 14 - 18, 2022 :
All information about the program

Contact us - Student support and Graduate School office :
Tél : 01 44 32 35 60
enseignement@phys.ens.fr

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Next student seminar :
Access to the program

Here you can find information about your internships:
Experimental Internship - Undergraduate program
Master ICFP first year Internship

News : ICFP Research seminars
November 14 - 18, 2022 :
All information about the program

Contact us - Student support and Graduate School office :
Tél : 01 44 32 35 60
enseignement@phys.ens.fr

Cours : Pierre-François Cohadon
TD : Alexandre Journeaux
ECTS : 3
Langue d’enseignement : anglais
Contrôle: written

Description

The course will introduce a number of concepts and techniques in current quantum physics experiments: entanglement, teleportation, Wigner function, non-gaussian quantum states, decoherence, squeezing... These topics will be illustrated with very different experimental platforms: single-photon sources, microwave resonators, high-finesse optical cavities, nonlinear crystals, trapped atoms or ions, gravitational-wave interferometers...

Contents of the lectures

1. Light and the Polarization degree of freedom
Bell Inequality
Q Cryptography
Q teleportation

2. Quantization of the electromagnetic field
Quantum states: Fock states, coherent states, Squeezed states
Quasiprobability distributions
The beamsplitter in quantum optics

3. Quantum optics of a single mode
Q Rabi oscillations, connection to semi-classical treatment
QND measurement of the photon number
Measuring the decoherence of a mesoscopic non-gaussian quantum state

4. Quantum optics of the mode continuum: the quantum vacuum
Spontaneous emission of an excited state
Inhibition of spontaneous emission
The Casimir force
Hybrid Light−Matter States in chemistry

5. The quantum noise spectrum
Different models for quantum light
Modulation and sidebands in signal processing
The sideband quantum model
Detecting quantum noise: the homodyne detection

6. Quantum noise in displacement sensing
Quantum Phase noise and Quantum Radiation Pressure Noise
The Standard Quantum Limit
Case study: gravitational-wave interferometers
Beyond Quantum Limit with Squeezed Light

Quick links

Next student seminar :
Access to the program

Here you can find information about your internships:
Experimental Internship - Undergraduate program
Master ICFP first year Internship

News : ICFP Research seminars
November 14 - 18, 2022 :
All information about the program

Contact us - Student support and Graduate School office :
Tél : 01 44 32 35 60
enseignement@phys.ens.fr