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BEGIN:VEVENT
DTSTAMP:20261024T174459Z
LAST-MODIFIED:20201113T144859Z
DTSTART:20201113T170000Z
DTEND:20201113T180000Z
UID:event2377@bu.edu
URL:http://physics.bu.edu/internal/events/show/2377
SUMMARY:Colliding photons and instantons in superconducting circuits
DESCRIPTION:Featuring Vladimir Manucharyan\n\nPart of the Biophysics/Conden
	sed Matter Seminar Series.\n\nLight does not typically scatter light\, as w
	itnessed by the linearity of Maxwell's equations. Using linear chains of Jo
	sephson junctions\, we constructed superconducting circuits\, in which micr
	owave photons have well-defined energy and momentum\, but their lifetime is
	 finite due to decay into lower energy photons. The inelastic photon-photon
	 interaction originates from quantum phase-slip fluctuations and has no ana
	logs in quantum optics. In fact\, the surprisingly high photon decay rate i
	s explained by mapping the system to a Luttinger liquid with impurities. In
	 this talk I will introduce an electrical engineer's view of quantum phase-
	slips [1] and overview our recent experimental studies of photon-instanton 
	collisions [2]. TIme permitting\, I will discuss the relevance of our resul
	ts in the contexts of quantum impurity models [3]\, quantum thermalization 
	in closed systems\, and superconductor-insulator transition in one-dimensio
	nal superconductors [4].\n\n[1] arXiv:1907.02937 (Nature 2020)\n[2] arXiv:2
	010.02099\n[3] arXiv:2010.02630\n[4] arXiv:1805.07379 (Nature Physics 2019)
LOCATION: \, \, 
STATUS:CONFIRMED
CLASS:PUBLIC
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