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BEGIN:VEVENT
DTSTAMP:20261015T104830Z
LAST-MODIFIED:20160531T144547Z
DTSTART:20160603T150000Z
DTEND:20160603T160000Z
UID:event1615@bu.edu
URL:http://physics.bu.edu/internal/events/show/1615
SUMMARY:Quantum thermalization through entanglement
DESCRIPTION:Featuring Adam Kaufman\n\nPart of the Condensed Matter Theory S
	eminar Series.\n\nEntanglement within a many-body system is a defining feat
	ure of strongly correlated quantum systems. Recent theoretical developments
	 point to the entropy of entanglement as a means to classify unusual quantu
	m phases\, such as spin liquids and topological phases. In this talk I will
	 present an experimental scheme to probe entanglement in itinerant systems 
	through interference of two copies of a many-body state. Akin to Hong-Ou-Ma
	ndel interference of photons\, this measurement performed with ultracold at
	oms probes the indistinguishability of quantum states. I will discuss how t
	his interference allows us to measure quantum purity\, second order Rényi 
	(entanglement) entropy and mutual information within finite Bose-Hubbard ch
	ains. In the context of these techniques\, I will focus on our investigatio
	n of the dynamics of quenched\, isolated bosonic systems. Here we observe t
	hat thermal ensembles appear to emerge from a pure quantum state\, while th
	e entanglement entropy quantitatively approaches the thermal entropy. Our o
	bservations experimentally illustrate the role of entanglement in facilitat
	ing thermalization of pure systems undergoing unitary dynamics.
LOCATION:SCI 328\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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