Controlling photons in a box and exploring the quantum to classical ...

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Cavity Quantum Electrodynamics:a stage to witness the interaction between light and matter atOne atom interacts withone (or a few) photon(s)in a boxthe most fundamental levelA sequence of atoms crosses thecavity,couples with its field andcarries away information about thetrapped lightPhotons bouncing on mirrorspass many many times on theatom: the cavity enhancestremendously thelight-matter coupling6 cmThe bestmirrors in theworld: morethan one billionbounces and afolded journeyof 40.000km(the earthcircumference)for the light!Photons aretrapped formore than atenth of asecond!
RydbergAn extremely sensitive detector:the circular Rydberg atomAtom in circular Rydberg state:electron on giant orbit(tenth of a micron diameter)Delocalized electron wavee (n=51)D.KleppnerAtom in ground state:electron on 10 -10 m diametreorbitElectron is localised on orbit by amicrowave pulse preparingsuperposition of two adjacentRydberg states: |e> ! |e> + |g>Schrödinger kitteng (n=50)The localized wave packet revolves around nucleusat 51 GHz like a clock’s hand on a dial.Complex preparation with lasers and radiofrequency
Page 1: Controlling photons in a box andexp
Page 4 and 5: «Particle control in a quantum wor
Page 6 and 7: PhD with Claude Cohen-Tannoudji (19
Page 9 and 10: With Michel Gross and Claude Fabre
Page 11: Photon detection by photoelectric e
Page 15 and 16: An artist’s view of set-up…Clas
Page 17 and 18: Progressive collapse as n is pinned
Page 19 and 20: Exploring the wave nature of trappe
Page 21 and 22: A coherent state of light frozen at
Page 23 and 24: How single atom prepares Schröding
Page 25 and 26: Fifty milliseconds in the life of a
Page 27 and 28: Cavity QED: coupling real or artifi
Page 30 and 31: October 10 2012I.DotsenkoS.GleyzesJ

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