Controlling photons in a box and exploring the quantum to classical ...
Controlling photons in a box and exploring the quantum to classical ...
Controlling photons in a box and exploring the quantum to classical ...
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Cavity Quantum Electrodynamics:a stage <strong>to</strong> witness <strong>the</strong> <strong>in</strong>teraction between light <strong>and</strong> matter atOne a<strong>to</strong>m <strong>in</strong>teracts withone (or a few) pho<strong>to</strong>n(s)<strong>in</strong> a <strong>box</strong><strong>the</strong> most fundamental levelA sequence of a<strong>to</strong>ms crosses <strong>the</strong>cavity,couples with its field <strong>and</strong>carries away <strong>in</strong>formation about <strong>the</strong>trapped lightPho<strong>to</strong>ns bounc<strong>in</strong>g on mirrorspass many many times on <strong>the</strong>a<strong>to</strong>m: <strong>the</strong> cavity enhancestremendously <strong>the</strong>light-matter coupl<strong>in</strong>g6 cmThe bestmirrors <strong>in</strong> <strong>the</strong>world: morethan one billionbounces <strong>and</strong> afolded journeyof 40.000km(<strong>the</strong> earthcircumference)for <strong>the</strong> light!Pho<strong>to</strong>ns aretrapped formore than atenth of asecond!
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