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BEGIN:VEVENT
DTSTAMP:20260728T123301Z
LAST-MODIFIED:20191001T143752Z
DTSTART:20191002T193000Z
DTEND:20191002T203000Z
UID:event2199@bu.edu
URL:http://physics.bu.edu/internal/events/show/2199
SUMMARY:Path to building quantum spin liquids and topological qubits within
	 existing quantum hardware
DESCRIPTION:Featuring Zhicheng Yang\, Boston University Physics Department\
	n\nPart of the Condensed Matter Theory Seminar Series.\n\nWe address a cent
	ral problem in the creation and manipulation of quantum states: how to buil
	d topological quantum spin liquids with physically accessible interactions.
	 Theorists have been studying models of quantum spin liquids that rely on `
	`multi-spin" interactions since the 1970s\, and\, more recently\, have real
	ized that these models can be used for quantum computing. However\, nature 
	does not provide such interactions in real materials. We construct a lattic
	e gauge model where the required\, fully quantum\, multi-spin interactions 
	can in fact be emulated exactly in any system with only two-body Ising inte
	ractions plus a uniform transverse field. The latter systems do exist\, and
	 we provide an explicit embedding of our model into one such system\, the c
	ommercially available D-Wave machine. Therefore\, our solution is an altern
	ative path to building a workable topological quantum computer within exist
	ing hardware. Our bottom-up construction is generalizable to other gauge-li
	ke theories\, including those with fractonic topological order such as the 
	X-cube model. Taken as a whole\, our approach is a blueprint to emulate top
	ologically ordered quantum spin liquids in programmable quantum machines.
LOCATION:SCI 328\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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