BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//RLASKEY//CALENDEROUS//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20261017T085310Z
LAST-MODIFIED:20200214T170416Z
DTSTART:20200220T173000Z
DTEND:20200220T183000Z
UID:event2302@bu.edu
URL:http://physics.bu.edu/internal/events/show/2302
SUMMARY:Realizing a synthetic topological insulator with a quasi-periodical
	ly driven qubit
DESCRIPTION:Featuring Eric Boyers\, Boston University\nHosted by: Eric Boye
	rs\n\nPart of the Graduate Student Council Events.\n\nPart of the student s
	eminar series\n\nAbstract: Synthetic dimensions are a class of techniques w
	hich extend the effective dimensionality of a system by introducing additio
	nal degrees of freedom that mimic spatial dimensions and have emerged as a 
	major area of research in recent years as a means to enrich the physics acc
	essible by experiments. Synthetic topological systems in particular have re
	ceived much attention due to the close connection between topological pumps
	 in lower dimensions and time independent topological systems in higher dim
	ensions\, as well as their potential applications in quantum simulation and
	 devices. While synthetic topological systems have been demonstrated in a n
	umber of platforms\, few attempts have been made to realize them in few-lev
	el systems.\n\nIn this talk\, I present an experimental demonstration of a 
	synthetic topological insulator in a qubit using a quasi-periodically drive
	n Nitrogen-vacancy center. By measuring the evolution of the overlap of sta
	tes prepared at nearby points in the synthetic Brillioun zone\, we perform 
	a Loschmidt echo-like experiment which directly measures the Chern number\,
	 the topological invariant of the system. We find that the Chern number is 
	integer quantized as expected and we use it to map out the phase diagram of
	 the model. Our results show close agreement with theory\, including an eff
	ective half-integer Chern number at a critical point in the model.
LOCATION:SCI 352\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
END:VEVENT
END:VCALENDAR