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Conference "Wave-particle duality with naked eye" par Emmanuel
Fort le jeudi 19 janvier 2012 à 13h30 en Amphithéatre PONTE (FST
We have recently discovered a macroscopic object composed of a
material particle dynamically coupled to a wave packet. The
particle is a droplet bouncing on the surface of a vertically
vibrated liquid bath ; its pilot-wave is the result of the
superposition of the surface waves it excites. Above an excitation
threshold, this symbiotic object, designated as a “walker” becomes
Such a walker exhibits several features previously thought to be
specific to the microscopic realm. The unexpected appearance of
both uncertainty and quantization behaviors at the macroscopic
scale lies in the essence of its “classical” duality. The dynamics
of the droplet depends on previously visited spots along its
trajectory through the surface waves emitted during each bounce.
Although based on fundamental concepts, commonly found in living
systems, this path-memory driven dynamics is still unexplored in
physics elementary objects. This new class of memory-encoded
systems which possess a spatiotemporal nonlocality shakes the
frontiers between macroscopic and microscopic world. In this talk,
I will present the dynamics of this object in experiments similar
to the historical ones in quantum physics : diffraction and
interference through slits, tunneling, Landau quantization… I will
also discuss the implications for quantum objects.
Contact : Emmanuel Fort, Associate Professor -
University Paris Diderot
Centre d’Imageries Plasmoniques Appliquées
Institut Langevin ESPCI ParisTech - CNRS UMR 7587
INSERM ERL U979 "Wave Physics For Medicine"
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