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BEGIN:VEVENT
DTSTAMP:20260814T000059Z
LAST-MODIFIED:20170119T150137Z
DTSTART:20170123T203000Z
DTEND:20170123T213000Z
UID:event1699@bu.edu
URL:http://physics.bu.edu/internal/events/show/1699
SUMMARY:Building materials from light: Photonic Landau levels and Rydberg-m
	ediated interactions
DESCRIPTION:Featuring Ariel Sommer\, MIT\n\nPart of the Biophysics/Condense
	d Matter Seminar Series.\n\nAdvances in the control of light propagation an
	d photon-photon interactions have lead to a new notion of photonic material
	s -- states of light that resemble material systems. I will describe our ex
	perimental approach to photonic materials\, in which we use a degenerate no
	n-planar optical resonator to realize a two-dimensional photon gas with an 
	effective magnetic field. We observe photonic Landau levels\, indicating a 
	strong effective magnetic field\, and a singularity of spatial curvature ar
	ising from the effectively conical geometry of our photon gas. Spatial curv
	ature provides a novel probe of quantum Hall states\, allowing us to make t
	he first experimental measurement of the mean orbital spin\, which characte
	rizes topological phases. To realize photon-photon interactions\, we demons
	trate hybridization of photons in an optical resonator with atomic Rydberg 
	excitations. Future work will aim to realize strongly correlated photonic f
	ractional quantum Hall states by combining strong effective gauge fields wi
	th photon-photon interactions.
LOCATION:SCI 328\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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