= Serge Haroche
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{tag=Physicist}
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<Serge Haroche> developed experiments that probe <photons> stored in a cavity without immediately absorbing them. Passing <chemical atoms> interact with the cavity field and carry information about its <photon number> to an external detector.
Repeated nondestructive probes can progressively narrow the possible <photon number>, allowing the evolution of a measurement result to be followed. The approach separates the system carrying the stored <energy> from the successive particles carrying information about it, enabling experimental studies of <quantum measurement> and the quantum-to-classical transition.<Controlling Photons in a Box and Exploring the Quantum to Classical Boundary by Serge Haroche>[Nobel lecture: cavity storage, atomic probes and nondestructive field measurements]{ref}
\Image[https://commons.wikimedia.org/wiki/Special:Redirect/file/Serge%20Haroche%201%202012.jpg?width=250]
{title=Portrait of <Serge Haroche>}
{description=Bengt Nyman. https://creativecommons.org/licenses/by/2.0/[CC BY 2.0], via Wikimedia Commons.}
{source=https://commons.wikimedia.org/wiki/File:Serge_Haroche_1_2012.jpg}
{width=250}
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